Department profile
Marks & Clerk

Intellectual Property

UK Guide 2026 : London (Firms)


Marks & Clerk

Rankings

About

Provided by Marks & Clerk

Our market-leading patent litigation team makes us one of the most frequently instructed firms in this area. We are regularly trusted with the most complex and high-value matters because of the strategic, legal and technical excellence of our top ranked patent litigators. We are as comfortable conducting a single national patent action as we are co-ordinating a team of trusted partners in international multi-jurisdictional litigation.

We advise across the full spectrum of sectors, from life sciences to high tech and engineering. Our clients include many of the largest pharmaceutical, biotech and chemical companies in the world. They have diverse product and innovator portfolios including monoclonal antibodies, new chemical entities, vaccines, research tools, bio-processes, formulations and dosage regimes. On the high tech and engineering side we work with cutting-edge global companies including those specialising in software and electronics as well as those in more traditional electrical, mechanical and  engineering industries.

Many of our specialist litigators have a science or engineering background in addition to top-level legal skills. Where additional and specialised technical expertise is needed we can draw upon the world-class knowledge of our patent attorney colleagues.

Chambers Review

Provided by Chambers

Intellectual Property - London (Firms)

Band 4

Band 4


What the Team is Known For

Marks & Clerk is a dedicated IP firm noted as a regular presence in the patent courts, fighting cases for leading electronics, engineering and pharmaceutical companies. Clients benefit from the firm's strong relationship with its sister patent and trade mark attorney firm.

Work Highlights

Provided by Chambers

  • Marks & Clerk Law represented Pfizer on a complex three patent revocation action against GSK relating to the rollout of RSV vaccines.

Strengths

Provided by Chambers

  • They are well organised and clearly explain legal concepts and processes to lay participants. Their team has great breadth with clearly defined roles that are openly communicated.

    Intellectual Property respondentUK
  • They have a high level of expertise, work well as a team and are able to handle complex, high-stakes cases.

    Intellectual Property respondentUK
  • The team is very enjoyable to work with: they are accessible, proactive and responsive. They are also pragmatic in their approach.

    Intellectual Property respondentUK

Notable Practitioners

Provided by Chambers

  • Band 2Mike Gilbert
    Band 2Mike Gilbert

    Mike Gilbert

    Mike Gilbert is recommended for his expert handling of complex life sciences patent litigation. He is highly regarded for his practice specialism in SPCs and biopharmaceutical patents.
    • Mike Gilbert handles complex cases very well, builds a strong team, is easy to work with and is results-oriented.

      Intellectual Property respondentUK
    • Mike has provided insightful clarification on multiple occasions over the past year.

      Intellectual Property respondentUK

Ranked Individuals at Marks & Clerk (1)

London (Firms)

Members

Provided by Marks & Clerk

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