Marks & Clerk Solicitors

Intellectual Property Department

London (Firms)
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What the team is known for

Dedicated IP firm noted as a regular presence in the patent courts, fighting cases for leading electronics, engineering and pharmaceutical companies. Also recommended for disputes involving all non-patent rights, trade marks in particular. Clients benefit from the firm's strong relationship with its sister patent and trade mark attorney firm.


A client says: "Very professional, knowledgeable lawyers who we trust and depend on for our IP and legal support."

A client says: "They provide us with deep insights and their explanations are very clear."

Work highlight

Acted for Amgen in proceedings brought by Pfizer to invalidate an Amgen patent concerning cholesterol-reducing anti-PCSK9 antibodies.

Notable practitioners

Gregor Grant has been one of the leading lights in patent litigation for many years, and is equally at home with life sciences, technology and engineering disputes. A client says: "He's a very logical thinker and takes a commercial view."

Mike Gilbert is a seasoned patent litigator with a focus on life sciences. He has in recent years handled a number of cases concerned with biologics.

William Cook leads the firm's TMT practice and concentrates primarily on patent litigation. He is highly sought after for his knowledge of the law surrounding standard-essential patents.