Yasar Çelebi
CMSCMS is particularly well versed in patent protection and litigation for tech, engineering and media-focused clients, working closely with the firm’s offices and practice groups around Europe to provide support on international patent disputes, in addition to handling the IP aspects of corporate transactions. Leading the team is seasoned WIPO arbitrator Rogier de Vrey, who advises life sciences, media and sports sector clients on cross-border patent infringement disputes and trade secrets matters. Yasar Çelebi focuses on tech and engineering-centric patent issues.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
'The firm's IP group is very knowledgeable about local and international patent issues.'
'Rogier de Vrey is an excellent communicator. Decisive but open to suggestions.'
'In court, Rogier de Vrey and Yasar Çelebi know how to stick to the agreed-upon strategy despite the counterparty's attempts to distract them.'
'CMS stands out versus other law firms providing IP-related and commercial legal advice to us in that CMS has regard for the complexities of intellectual property rights in EU cross-border transactions and provides commercially effective, practical advice.'
'A very friendly, diverse and approachable team boasting a wide variety of experience with all sorts of IP-related matters.'
'Yasar Çelebi is very knowledgeable about the IP field, has a good grasp of both IP prosecution and litigation, and is a great and friendly communicator.'
'Rogier de Vrey is dedicated, enthusiastic and competent.'
Key clients
- Paramount
- Comcast (NBC Universal, Sky)
- HP
- Kiremko
- UEFA
- Johnson & Johnson
- Primark
- Syngenta
- Amgen
- Sony (Europe)
- McCain
- Vattenfall
- Royal BAM Group
- IBM
- Royal Ahrend
Work highlights
- Represented Kiremko in a substantial number of patent infringement and patent invalidity proceedings against Tomra.
- Acted for Ferm RFID Solutions in its claims against Avery Dennison Corporation and its Dutch subsidiary concerning the alleged unlawful acquisition of trade secrets and in entitlement proceedings.
- Assisted Technology & Strategy Group with patent portfolio due diligence as part of its acquisition of Topic Ventures B.V. and its 13 subsidiaries.
Lawyers
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
The lawyer(s) leading their teams.
Rogier de Vrey