Intellectual property: Patents in Netherlands

Bird & Bird

The cohort at Bird & Bird is recognised for its capabilities advising on the gamut of patent matters in complex and often cross-jurisdictional contexts and is well-regarded for its ‘combination of drive, quality and focus’. In addition to handling complex patent litigation matters, which make up a large portion of its workload, the team handles a range of advisory work. Therein, the team frequently represents well-known clients across the array of industry sectors in such disputes as licence expiries, injunctions and infringements, before both the Dutch courts and the UPC. Manon Rieger-Jansen helms the offering. Key practitioners include Marc van Wijngaarden who has expertise in the life sciences and chemical industry sectors and is experienced handling UPC cases, as well as ‘great’ practitioners Tjibbe Douma and Peter van Gemert, who harness tech specialisms. Carlos Van Staveren has noteworthy experience before the EPO and UPC.

Practice head(s):

Manon Rieger-Jansen


Other key lawyers:

Wouter Pors; Tjibbe Douma; Peter van Gemert; Marc van Wijngaarden; Hester Borgers; Sabrina Lodder; Carlos van Staveren


Testimonials

‘Knowledgeable about Dutch law and experienced before the court at The Hague.’

‘Wouter Pors is responsive and comprehensive.’

‘A strong team with great technical and legal skills that provides a good client service.’

‘Tjibbe Douma and Peter van Gemert are both great.’

‘High-quality people who work well together and enjoy doing so. Their teamwork is exceptional.’

‘As compared to other firms, they are very good at having tasks handled at the right level within their organisation. This allows them to provide a high-quality service in an efficient manner.’

‘They combine drive, quality, and focus with just being very nice people to work with. I have worked with Marc van Wijngaarden in the past, and that was a good experience.’

‘Hester Borgers and Sabrina Lodder deserve mention.’

Key clients

Nokia


Edwards Lifesciences


Broadcom


KPN


Dexcom


Qualcomm


Neuraxpharm


Bicycle Therapeutics


Neo Materials


Maxeon Solar Technologies


Odysight AI


Canon


BSRP


Celltrion


Work highlights


  • Representing Nokia in numerous patent litigation comprising a series of proceedings against ASSIA as well as Oppo related to both implementation and alleged standard-essential patents on complex DSL technology.
  • Representing Celltrion in two parallel, closely followed UPC preliminary injunction cases against Novartis and Genentech regarding biosimilar competition concerning Xolair.
  • Representing Dexcom in two UPC proceedings against Abbott regarding its Continuous Glucose Monitoring device.

Brinkhof

The group at Brinkhof is well-placed to handle the remit of complex and high-value matters for its portfolio of well-known clients in both domestic and international contexts. It is noted that the team’s ‘desire to win is exceptional’. Its workload involves acting for clients in complex and high-stakes patent litigation work before both the UPC and the Dutch courts. Richard Ebbink handles disputes ranging from those regarding infringement and validity, to those involving patent enforcement; Mark van Gardingen is experienced acting for high-profile clients in the variety of disputes; and Daan de Lange has expertise in life sciences and FRAND-related litigation cases in particular. The three oversee the practice alongside Koen Bijvank who ‘deserves all the accolades that he receives’, Jan Pot who has particular aptitude handling tech-related litigation, and Rien Broekstra who has experience acting before the UPC and the Dutch courts. Paul Marcelis is a key contact.

Practice head(s):

Richard Ebbink; Mark van Gardingen; Daan de Lange; Koen Bijvank; Jan Pot; Rien Broekstra


Other key lawyers:

Rik Lambers; Paul Marcelis; Alexander de Leeuw; Barbara Mooij


Testimonials

‘A sounding board for us.’

‘Daan de Lange stands out for his thinking outside of the box.’

‘In a country where there is an abundance of great patent lawyers, Brinkhof stand out as excellent. Their desire to win is exceptional.’

‘I would want them on my side every time.’

‘Mark van Gardingen is probably the leading patent lawyer in the Netherlands.’

‘Daan de Lange is very strong.’

‘Koen Bijvank deserves all the accolades that he receives.’

‘Rik Lambers is good to work with.’

Key clients

Accord Healthcare


Agfa


Alcon


Alvotech


Amgen


Amycel


Ballino


Becton Dickinson


Belmoca


Boston Scientific


Boehringer Ingelheim


Delta Electronics


Glycostem


Google LLC


Heineken


High Point


Longi


OPPO


Philips Domestic Appliances


QVQ


Sandoz


Solynta


Synthon


Stada


Tata Steel


The Broad Institute of MIT and Harvard


Unilever


Versuni


Vestel


Vision-Box


Xiaomi


ZURU Inc.


Work highlights


  • Representing Amgen in several high-profile and internationally significant UPC and EPO proceedings against Sanofi and Regeneron regarding PCSK9 antibodies, a new type of medicine for lowering cholesterol in the blood based on monoclonal antibody technology.
  • Representing OPPO in multi-jurisdictional patent disputes with a multitude of proprietors of standard essential patents, including Sisvel, Nokia, Panasonic and several others.
  • Acting for the Broad Institute of MIT and Harvard in connection with its discovery and development of the ground-breaking CRISPR technology for genome editing, including representing our client in matters related to its significant European CRISPR patent portfolio and other patents.

HOYNG ROKH MONEGIER

The team at IP boutique HOYNG ROKH MONEGIER is considered ‘the go-to shop for every IP case’ by clients and is well-versed in handling the plethora of complex patent litigation matters before the UPC, European and Dutch courts. Such work is frequently high-value and cross-jurisdictional in nature. Theo Blomme is experienced defending some of the team’s best known clients in national and international disputes. Willem Hoyng, described as ‘the founding father of IP litigation in the Netherlands’, has noteworthy capabilities representing both Dutch and foreign multinationals. Frank Eijsvogels is also a name to note for his Supreme Court capabilities and specialism in anti-piracy matters, as is Peter van Schijndel, whose sector specialisms include medical devices, pharma and biotech. ‘Star’ team lead Bart van den Broek has expertise handling patent disputes in the electronics, telecoms, IT tech and pharma industries in particular.

Practice head(s):

Bart van den Broek


Other key lawyers:

Willem Hoyng; Robin van Kleef; Frank Eijsvogels; Nathalie Rodrigues; Pien Haase; Jeroen den Hartog; Theo Blomme; Peter van Schijndel; Johan Elkenbracht; Akiva Friedmann; Andrew Lin


Testimonials

‘The IP team has a good understanding of IP law and case law within the field. They work proactively and deliver timely advice as needed.’

‘You feel they are part of your team and have a good understanding of your business.’

‘Frank Eijsvogels is extremely well-versed in IP law and has a really good strategic perspective on how to handle the cases. Nathalie Rodrigues and Pien Haase are also very knowledgeable of IP law and provide very timely advice and strategic thoughts. Jeroen den Hartog understands the technical details that require focus in IP litigation.’

Key clients

AstraZeneca


BioNTech


Essity


Johnson & Johnson


Orbisk


Sanofi


REGENERON


We Soda


Work highlights


  • Assisted BioNTech in patent litigation regarding the mRNA COVID vaccines.
  • Assisted Johnson & Johnson in patent litigation regarding Stelara®, a blockbuster antibody drug for the treatment of psoriasis.
  • Assisted Orbisk in UPC patent litigation regarding waste management solutions for reducing food waste.

Freshfields Bruckhaus Deringer

The team at Freshfields Bruckhaus Deringer is well-regarded for its capabilities handling prominent patent litigation cases of ultra-high-value for its clients, particularly those in the pharma and consumer healthcare industry sectors. Advising on patent-related aspects of significant corporate transactions is also an area of experience of the team. Rutger Kleemans helms the group and is described by clients as a ‘killer patent lawyer’ with experience acting before domestic and pan-European courts, including the UPC. Jelle Drok handles mass patent claims, ‘clever lawyer with a helicopter perspective’ Ruben Laddé became counsel in May 2024 and Allard van Duijn is also a key contact.

Practice head(s):

Rutger Kleemans


Other key lawyers:

Allard van Duijn; Jelle Drok; Ruben Laddé; Jan-Jaap Koningsveld; Auke-Frank Tadema


Testimonials

‘A very good, well-coordinated team. All topics are well explained. Their responsiveness is particularly noteworthy.’

‘We worked with Rutger Kleemans and Allard van Duijn. They both provided excellent support and were always approachable. Very experienced team with great strategic thinking.’

‘Rutger Kleemans focuses on the pharma sector, where Jelle Drok handles patent disputes in the digital and mechanical field. Their court work never fails to impress.’

Key clients

Moderna


Novartis (Sandostatin)


Entresto


Affinitor


Gilenya


Exjade


Kesimpta


Xolair


Genentech (Xolair)


Alexion


Grünenthal


Aduro Biotech


Genmab


OPKO Health


EirGen Pharma


Schöck


Kodak


Xiaomi


Work highlights


  • Representing Moderna in the Dutch litigation against Pfizer and BioNTech as regards their COVID-19 mRNA vaccine (Comirnaty), and coordinating all ex-US matters in this dispute.
  • Representing Novartis in Dutch nullity proceedings initiated by Synthon against Novartis’ foundational patent protecting their blockbuster drug used for the indications of heart failure and hypertension (Entresto).
  • Representing Novartis in the litigation saga against Pharmathen as regards a method to manufacture octreotide acetate microparticles, including PI, merits and enforcement proceedings before various District Courts and Courts of Appeal as well as the Dutch Supreme Court

Hogan Lovells International LLP

Hogan Lovells International LLP‘s group is well-placed to advise its roster of well-known clients on the remit of complex patent litigation matters. Ruud van der Velden has a focus on high-tech and life sciences-related contentious patent matters and co-leads the practice alongside Gertjan Kuipers who has expertise breaking patent boundaries for clients entering new markets. Patent litigator Rik Zagers has experience handling cross-border matters before the EPO, UPC and the Dutch courts, while Dirk-Jan Ridderinkhof has expertise across trade secret and patent disputes.

Practice head(s):

Ruud van der Velden; Gertjan Kuipers


Other key lawyers:

Rik Zagers; Dirk-Jan Ridderinkhof


Testimonials

‘Gertjan Kuipers stands out as an exceptional talent who consistently demonstrates unmatched expertise, strategic acumen, and unwavering dedication to his clients.’

‘Gertjan Kuipers possesses an extraordinary ability to navigate complex legal landscapes, delivering results that exceed expectations. His in-depth knowledge of the law, coupled with a keen analytical mind, allows him to craft innovative and effective litigation strategies. Gertjan’s courtroom presence is commanding and persuasive, making a significant impact on judges and opposing counsel alike.’

‘Gertjan Kuipers is not only a formidable advocate but also a trusted advisor who prioritises the best interests of his clients. Gertjan’s meticulous preparation and attention to detail ensure that every case is handled with the highest level of professionalism. In summary, Gertjan exemplifies the qualities of a stellar litigator—intelligence, tenacity, and a deep passion for justice.’

‘The team is very proactive and knowledgeable about the law and the biotechnology and pharmaceutical industry.’

‘Ruud van der Velden and Gertjan Kuipers have great attention to detail and strategic judgement and are very easy to work with.’

‘Good team. Good depth. Long history of excellent IP work.’

‘Ruud van der Velden is a super lawyer as is Gertjan Kuipers.’

‘Good, experienced, professional.’

Key clients

BMS


Meril Lifesciences


Oppo


Merck Sharp & Dohme


KPN


Amgen


Solvay


Advanced Bionics


Roche


Eli Lilly


Organik Kimya


Kindermann


Aiko


Zelig Mappa Farmers Ltd.


Huisman


Ferring


Continental Bakeries


HL Display


Work highlights


  • Representing BMS in various patent proceedings relating to BMS’ product Eliquis (apixaban), one of the best-selling medicines in the world.
  • Representing Meril Lifesciences in various patent proceedings against Edwards Lifesciences before the Dutch Courts, the EPO and the UPC.
  • Representing AIKO in its cross-border dispute with Maxeon in relation to solar panels in the Netherlands and before the UPC.

Simmons & Simmons

The ‘star patent litigation team’ at Simmons & Simmons is well-placed to assist its portfolio of clients on patent matters relating to tech and life sciences in particular. Complex patent disputes, including FRAND matters, form a significant portion of the team’s workload. It is also equipped to handle patent prosecution matters and the management of portfolios. The team is noted for its capabilities handling highly demanding and complex UPC cases’‘Senior star litigator with an incredible track record’ Bas Berghuis van Woortman oversees the group and is specialised in patents and tech, as are key contacts Johan Renes and Oscar Lamme.

Practice head(s):

Bas Berghuis van Woortman


Other key lawyers:

Oscar Lamme; Thomas Gniadek; Johan Renes; Machteld Hiemstra


Testimonials

‘The diverse international patent team includes both highly experienced attorneys at law from different jurisdictions and technically skilled patent attorneys from different fields of technology. This team is fully equipped to handle highly demanding and complex UPC cases in combination with litigation in the UK.’

‘Oscar Lamme has ligated complex international SEP cases before the Dutch court. He is technically qualified and thus can easily grasp complex subject matter both in pharma cases as well as telecom cases.’

‘Oscar has the ability to efficiently manage complex patent cases by delegating different topics to the people in this team who are best suited for the task, thereby making it a true team effort. ’

‘Thomas Gniadek is very diligent and provides good client service.’

‘A star patent litigation team with a good mix of legal and technical skills and in-house patent attorneys to support the litigators. Talent in the spotlight.’

‘Bas Berghuis van Woortman is a senior star litigator with an incredible track record; Oscar Lamme is one of the few litigators in the Netherlands with both a legal and technical background and the face of Dutch UPC; Sebastien Versaevel is intelligent, nice and great to work with; and Daisy Termeulen is an upcoming talent.’

‘Simmons & Simmons’ Netherlands team are very experienced and professional, always providing us with suggestions and advice of high-quality.’

‘The partners and associates of Simmons & Simmons have excellent IP litigation experience. They put themselves in the client’s shoes and think about how to maximise their clients’ benefits.’

Key clients

Bayer HealthCare


Samsung Bioepis


Netherlands Cancer Institute


Serenity Pharmaceuticals


UCB


uniQure


Zimmer Biomet


Pharmathen


Med-El


HP


Xiaomi


Samsung Electronics


Honeywell


IDEMIA


DivX


Spirits International


L’Oréal


BlackRock


Unicef


GrandVision


Jacuzzi


Van Caem Klerks


Gallo


i4F


Médécins Sans Frontières


VanDutch


Bridgestone


Plant-e


CSL


Sibionics


Koopman


Work highlights


  • Obtained two injunctions for Bayer over blockbuster drug Xarelto against Sandoz and Teva.
  • Initiated the first UPC proceedings in the Netherlands for Green Tech scale-up Plant-e.
  • Defended Pharmathen in cross-border dispute over Novartis’ blockbuster drug Sandostatin LAR.

Taylor Wessing

The ‘highly intelligent’ practice at Taylor Wessing is well-regarded for its experience handling patent matters for renowned clients across sectors ranging from consumer and retail, tech and life sciences to media and communications. Handling high-value injunctions before the UPC is also an area of expertise. Wim Maas oversees the Benelux team and has expertise in IP seizures as well as the remit of contentious and non-contentious litigation; Charlotte Garnitsch has a patent disputes focus; and Margot van Gerwen offers related regulatory advice. The ‘excellent’ Eelco Bergsma is also a key contact.

Practice head(s):

Wim Maas


Other key lawyers:

Eelco Bergsma; Charlotte Garnitsch; David Mulder; Geert Theuws; Yolandi Coetzee


Testimonials

‘What I appreciate about Taylor Wessing is their pragmatic approach and genuine interest in their clients. They carefully consider the trade-offs between costs and the best possible outcome for the client with every action they take. This is something I truly admire.’

‘They are easy to contact, open, and highly intelligent in their work.’

‘Eelco Bergsma is on top of things and is an excellent project leader and coordinator.’

Wim Maas is pragmatic and smart, which is key to business.’

‘Good communication and a lot of knowledge on UPC.’

‘They have a personal approach and understand the business, so that they know what it takes to win and what that means for our business specifically.’

Key clients

Pfizer


Abbott


Tandem Diabetes Care


Rubin Medical


CEAD B.V.


JRZ Suspension Engineering B.V.


Ericsson


Fresenius


Jovaplant B.V.


Glenmark


Work highlights


  • Representing Pfizer in their dispute at the Dutch District Court of The Hague regarding the Covid-19 vaccine of Pfizer and BioNTech.
  • Representing Abbott in multi-jurisdictional patent litigation against Dexcom regarding continuous glucose monitoring (CGM) devices.
  • Representing Tandem Diabetes Care in multiple UPC actions against F. Hoffman-La Roche AG and Roche Diabetes Care.

A&O Shearman

The practice at A&O Shearman is well-equipped to advise on the array of patent matters, including portfolio management. Frits Gerritzen helms the group and has particular expertise in patent litigation cases regarding enforcement, the validity of patents, and matters involving patent licensing. Both Gerritzen and Marleen van Putten, who is particularly experienced assisting with non-contentious and transaction-related patent cases, are described by clients as ‘razor sharp’. Sophie van Asten is also a key name to note with cross-border tech and life sciences expertise.

Practice head(s):

Frits Gerritzen


Other key lawyers:

Marleen van Putten; Sophie van Asten; Frits Gerritzen


Testimonials

‘The support provided by Marleen van Putten and Frits Gerritzen was on-point and razor sharp on the advice provided, avoiding excessive legal verbiage and unreasonable risk indications.’

‘The team was very easy to talk to and approachable. Both Marleen and Frits were quick to respond to our questions. Marleen was an absolute star in picking up the intention behind every question posed by us.’

‘Many patent cases are more than just patent-related. In my case there were clear issues of private liability, concerns about legal procedures, plus other aspects and A&O has all expertise required to cover all. As client, one never has to worry about boundaries in expertise.’

Key clients

Samsung


Regeneron


Google


KWS SAAT SE


KPN


Work highlights


  • Advised on the structuring of the client’s patent portfolio in view of the combination with Makerbot and on trade secrets aspects of this transaction.

BarentsKrans

BarentsKrans‘ group is a ‘well-oiled machine’, well-placed to assist its list of clients on the gamut of patent matters across industry sectors including life sciences, pharma, tech, and mechanical engineering in particular. Advising clients on litigation strategy and in preparation for court proceedings regarding infringement and invalidity forms a large part of the team’s workload. The team is also equipped to assist in the day-to-day management of IP portfolios. Jaap Bremer heads up the group, a key member of which is Jarieke Timmerman.

Practice head(s):

Jaap Bremer


Other key lawyers:

Jarieke Timmermans


Testimonials

‘A small team and a well-oiled machine. They are structured and come up with smart approaches and angles. They go the extra mile, particularly Jaap Bremer and Jarieke Timmermans.’

‘Jaap Bremer is able to translate complex legal topics into business language and provide hands-on advice. He is concise, to-the-point and thinks things through. He has extensive knowledge of patent law domestically and in the EU.’

‘Jarieke Timmermans is a promising associate, able to process lots of technical information. She dives right into it and shows quite some patent knowledge. She has an excellent memory and, as Jaap’s mentee, has clearly picked up his hands-on business advisory approach.’

‘The team stand out for blending its broad industry knowledge and understanding of complex patent regulatory frameworks with clear advice and instructions.’

‘We have been working with the team for years on a highly complex case uncommon to our sector, and it has been very valuable to have the BarentsKrans team on our side to steer us through the maze of procedures.’

‘Jaap Bremer is an approachable partner with good sector knowledge who is capable of quickly understanding the struggles faced by the company. Good communication and guidance are provided.’

Key clients

Viatris (Mylan)


Advance Medical Designs


Pelvitec


InterDigital


BlueAlp (Mourik)


Huisman Equipment


Hewlett-Packard Enterprise


Cheesepop


Work highlights


  • Representing Viatris in litigation against Novartis up to the Supreme Court regarding infringement and validity of Novartis’ European Patent for a dosage regimen of multiple sclerosis drug fingolimod (Gilenya).
  • Representing Advance Medical Designs and Pelvitec in preliminary injunction proceedings against Corbin Clinical Resources before the District Court and the Court of Appeal regarding alleged infringement and invalidity of Corbin’s European Patent covering a needle guide for use in prostate biopsy procedures.
  • Representing a US-based pharmaceutical company in patent infringement and invalidity litigation regarding a blockbuster multiple sclerosis drug.

De Brauw Blackstone Westbroek

De Brauw Blackstone Westbroek’s practice is well-equipped to advise on the array of patent proceedings. ‘Go-to Supreme Court attorney in IP cases’ Tobias Cohen Jehoram is experienced representing clients in contentious IP matters. ‘Exceptional patent litigator’ Anne Marie Verschuur has expertise handling tech-related patents work in particular, and acts for clients before the UPC in invalidity and infringement matters including FRAND cases. The pair co-lead the offering. Tech-related patent disputes are also the specialism of Bertrand ter Woort.

Practice head(s):

Tobias Cohen Jehoram; Anne Marie Verschuur


Other key lawyers:

Bertrand ter Woort; Johan Valk; Stephanie de Beer; Yiyi Song


Testimonials

‘The IP team of de Brauw Blackstone Westbroek is top of the bill in the Netherlands.’

‘Tobias Cohen Jehoram is the go-to Supreme Court attorney in IP cases. He is extremely knowledgeable on IP law and understands the thinking of the Supreme Court judges. Johan Valk is an excellent associate in Tobias’ team.’

‘A highly motivated, hand-picked team of bright minds. The best strategists you can get in the Dutch market.’

‘Anne Marie and Tobias are highly talented, very business-oriented, and pragmatic and creative litigators.’

‘This is the go-to team for IP litigation in the Netherlands. Enormously experienced, tough litigators whilst at the same time a pleasure to deal with.’

‘Anne Marie Verschuur is an exceptional patent litigator, brilliant on both the detail and the wider strategy. Tobias Cohen Jehoram is widely recognised as the top litigator for trademarks and copyright, he is intellectually impressive and brilliant with clients.’

‘An excellent team with first-class service levels.’

‘Anne Marie Verschuur is an excellent advocate and excellent on complex patent disputes.’

Key clients

Bristol Myers Squibb


Sonos


Ocado


Access Advance and GEVC


Pharmathen Global B.V.


Koopman International


JDE Peets


Amgen (Shire)


The Ocean Cleanup


GSK


Work highlights


  • Co-represented Ocado in landmark appeal proceedings before the Unified Patent Court, among others on the issue of public access to the parties’ submissions in the UPC system.
  • Representing Bristol Myers Squibb in patent proceedings against Sandoz and Teva before the Dutch Supreme Court in a case where the Hague Court of Appeal gave a landmark decision regarding the interpretation of the Enlarged Board of Appeal G 2/21 decision.
  • Represented Pharmathen Global B.V. in patent proceedings against Novartis A.G. before the Dutch Supreme Court.

CMS

The group at CMS is headed up by experienced IP litigator Rogier de Vrey, who is experienced handling international trademark and patent matters, particularly in relation to life sciences, media, and sports. Advising on the enforcement and protection of patents are key areas of focus for the team, in which Yasar Çelebi is a key contact.

Practice head(s):

Rogier de Vrey


Other key lawyers:

Yasar Çelebi


Testimonials

‘They have an international network whilst remaining very much a local advisor.’

‘Rogier de Vrey is an excellent communicator and Yasar Celebi is the ideal team player to ensure things get done.’

‘The team is approachable and always willing to think along. The CMS team also boasts a pleasant down-to-earth feel.’


Key clients

Paramount


Comcast (NBC Universal, SKY)


Colgate-Palmolive


Warner Bros Discovery (WBD)


UEFA


Johnson & Johnson


Primark


Roku


Guess


Global (media)


Amgen


Sony (Europe)


Shiseido (BPI)


Vattenfall


Royal BAM Group


IBM


Royal Ahrend


Kiremko


Syngenta


Toyota


Louwman


ASR


CitizenM


Plus Retail


Work highlights


  • Represented the client against Avery Dennison Corporation and its Dutch subsidiary in a breakthrough trade secret infringement action and patent entitlement action.
  • Advised the client in its acquisition of all shares in the capital of Dutch Ophthalmic Research Center (International) B.V..
  • Represented Kiremko in a substantial number of patent infringement and invalidity proceedings initiated by its competitor Tomra.

DLA Piper

The practice at DLA Piper is well-regarded for its abilities advising the range of clients, spanning sectors from IT and tech to energy and offshore, in patent litigation matters. Patent litigator Paul Reeskamp has experience handling domestic and cross-border cases and heads up the offering alongside Alexander Tsoutsanis, who is ‘prepared to roll up his sleeves’ to assist clients.

Practice head(s):

Paul Reeskamp; Alexander Tsoutsanis


Other key lawyers:

Thorstein Eradus; Noa Naaman


Testimonials

‘DLA has highly qualified lawyers who work as an integrated team. The lawyers are specialised where needed and cooperate very well to achieve an excellent result.

‘Paul Reeskamp is an outstanding lawyer in the field of patent law with many years of experience in high-profile cases. He is unique because of his ability to recognise the important legal issues.’

‘Paul is capable of providing a strategy towards a successful result and is capable of carrying that strategy out to a successful end. Alexander Tsoutsanis is also a very capable patent lawyer.’

‘DLA are a large multinational firm. With this team you get the benefit of large-scale expertise and depth, with a personalised service embodied by the approach of Alexander Tsoutsanis.’

‘Alexander is prepared to roll up his sleeves and invest in the success of the client.’

‘Very professional, covering all the aspects of law that a company like ours need to know, smoothly coordinated between all partners and lawyers. In a word – great!’

‘Alexander Tsoutsanis is pragmatic and creative.’

Key clients

AEGIR Marine


Asetek


Fresenius


Glen Dimplex


Heerema Marine Contractors


Hikvision


Marchfun


Pöppelmann


Q-Tech


TTD


Sakata


Scenic Biotech


Shell International B.V.


Smartwares


Wegochem


Work highlights


  • Reversed a first instance decision before the Court of Appeal for Glen Dimplex in a long-running dispute against Afire.
  • Representing Marchfun in a patent dispute against the biggest Internet Service Provider in The Netherlands before the Court of Appeal in The Hague concerning network technology.

Houthoff

Houthoff‘s practice is well-equipped to assist its clients with complex IP litigation. At the helm is Thomas de Weerd who has capabilities handling the remit of IP matters from trade secrets to non-contentious licensing and transactional matters, especially in outsourcing, data protection, and IT contexts. Agritech specialist Fleur Tuinzing-Westerhuis is considered a ‘preeminent expert’ in litigation by clients. Thijs van Aerde departed in 2024.

Practice head(s):

Thomas de Weerd


Other key lawyers:

Fleur Tuinzing-Westerhuis


Testimonials

‘Renowned for their unparalleled expertise and unwavering commitment to client satisfaction, this esteemed firm continues to exceed expectations. With a team of highly skilled attorneys possessing an in-depth understanding of IP, Houthoff offers a level of proficiency that is truly exceptional.’

‘An excellent team which has a broad IP offering. We have been working with this team for many years.’

‘Fleur Tuinzing-Westerhuis is a very smart lawyer – excellent at strategy and handling projects.’

‘Houthoff is a wise choice of team for its professionalism, considerable experience and extensive knowledge in various areas of law. The lawyers are proactive and provide excellent service. It is a pleasure to work with them.’

‘Fleur Tuinzing-Westerhuis is an agritech patent expert. Fleur is an experienced patent litigator and a preeminent expert in litigating cases concerning national and community plant variety rights. She has excellent procedural knowledge and is strategist in litigation relating to national and community plant variety rights.’

‘Fleur is a lawyer with outstanding motivation and dedication to the case at hand. She has impressive ideas and finds excellent solutions. She is responsive, readily available, and pleasant to work with.’

Key clients

HP


Dell


Dummen Orange


Netherlands Vehicle Authority


Nexperia


VolkerRail


Novartis


Omnis Power


Work highlights


  • Representing the client in patent litigation before the Dutch Supreme Court against the American multinational pharmaceutical company Bristol Myers Squibb (BMS).
  • Representing the client in a patent and trade secret dispute at the Court of North Netherlands, division Leeuwarden.
  • Representing the Swiss multinational pharmaceutical company Novartis in patent litigation before the Dutch Supreme Court against against Pharmathen, a leading complex drug delivery and formulation developer.

La Gro

La Gro‘s group is well-equipped to handle the broad range of intricate patent issues, including acting for its sector-spanning clients in infringement and invalidity proceedings before the UPC and the Dutch courts. Benjamin Niemeijer heads up the practice alongside Marleen van den Horst; both team leads harness standout expertise in pharma and life sciences-related matters in particular. ‘Exceptional lawyer’ Iris Arts is also a noteworthy name.

Practice head(s):

Benjamin Niemeijer; Marleen van den Horst


Other key lawyers:

Vivian Heijnen; Iris Arts


Testimonials

‘The team is very knowledgeable, and very importantly, great to work with and very reliable.’

‘Very knowledgeable, innovative and show strong, strategic and tactical thinking capabilities. New areas within the legal field are approached in an impressive manner.’

‘Benjamin Niemeijer and Vivian Heijnen show brilliant strategic, out-of-the-box thinking which has led us to far better results than we anticipated.’

‘They think well ahead, not losing sight of the human touch.’

‘This practice is unique due to its highly knowledgeable people. Their communication skills and thoroughness made every step of the process clear and concise.’

‘Marleen van den Horst was very knowledgeable and clear. Her communication skills are beyond perfect. Iris Arts was also an exceptional lawyer who was very concise and very thorough with her reviews. Both were amazing professionals who were able to help us out without issue.’

‘The team has extensive knowledge of patent law and SPCs with innovative strategies.’

‘Marleen van den Horst is a key name in the Netherlands’ patent practice with an extensive knowledge, and she is always available to solve clients’ specific problems.’

Key clients

Oldelft Ultrasound


Stada Arzneimittel AG


Adalvo


Rollepaal (RPF)


Amgen


FocusCare


OrthoApnea


Insud Pharma


InterDigital


Leiden University Medical Center


T. Stolze Installatietechniek


Vivisol B


NecstGen


Work highlights


  • Represent OrthoApnea and Vivisol B in infringement proceedings to enforce a patent before the UPC.
  • Represented Insud Pharma successfully in proceedings against Galenicum to invalidate a pharmaceutical patent.
  • Initiated proceedings to invalidate the Dutch part of EP 165 of Alexion, a patent protecting the use of eculizumab, a biologic, to treat various orphan diseases, like aHUS.

Oxon IP

Oxon IP‘s team is helmed by Leythem Wall who has noteworthy expertise handling EPO opposition and appeal matters in relation to patent litigation. The team handles matters across the remit of industry sectors, with a large proportion being for consumer products clients. Many matters handled by the team are millions of euros in value, and span various jurisdictions.

Practice head(s):

Leythem Wall


Testimonials

‘Pragmatic and highly skilled.’

‘Business-minded and highly practical.’

Key clients

Lonza


SWM


Ontex


PQ Corporation


GeoRoc International


Finnegan LLP


Mativ


Work highlights


  • Opposed European patents covering commercial nappy products successfully for the client.
  • Opposing European patents covering commercial tyre products in EPO opposition and appeal proceedings.
  • Defending European patents in EPO Opposition proceedings, covering their commercial nappy products, and for which there are corresponding litigation proceedings.