Kirkland & Ellis LLP

Kirkland & Ellis LLP is well-equipped to support a broad range of companies in matters involving state attorneys general, investigations, and enforcement actions. Split between Chicago and Washington DC, the team routinely engages with some of the largest multistate investigations, covering issues including consumer protection, antitrust, data privacy, and ESG. Chicago-based former Illinois attorney general Lisa Madigan is a breakout star with diverse expertise in the fields of consumer protection, data privacy, healthcare, and the environment, while Donna Welch has secured key wins in litigation against pharmaceutical companies. In DC, Reginald Brown provides strategic counsel and crisis management assistance to clients facing complex and significant regulatory, enforcement and reputational matters, and Jennifer Levy is an excellent choice for state AG litigation, particularly with regard to pharmaceuticals and product liability. Brian Benczkowski has significant investigations and enforcement experience, and counts among his strengths healthcare, tech and financial services. Raya Treiser is a key contact for ESG matters, with strong relationships in the energy sector. Mark Filip, who splits his time between both offices, leads on defenses and investigations concerning pharmaceutical, healthcare, and tech companies, while Olivia Adendorff, who also has a base in Dallas, supports on consumer protection, false advertising, antitrust, and ESG claims.