Anthony Trenton


Trenton, Anthony
Anthony Trenton is a highly regarded litigator and advisor who focuses his practice on intellectual property. He represents clients on matters relating to patents, trademarks and domain names, copyright, registered designs and design right, and breach of confidence. Mr. Trenton has extensive experience in handling all stages of litigation, from before commencement of proceedings through to trial and appeal. He has conducted cases up to the highest level in the UK, having run a two-week appeal in the House of Lords and an appeal in the UK Supreme Court. He is a Solicitor-Advocate (Higher Civil Courts) and has exercised his advocacy rights in the High Court.

After graduating in Natural Sciences from Cambridge, Mr. Trenton was called to the Bar of England and Wales. He trained as a pupil barrister under David Kitchin, now Lord Justice Kitchin (in charge of the Intellectual Property list of the Court of Appeal). He was also admitted as a Solicitor in England and Wales and was awarded the Diploma in Intellectual Property from the University of Bristol.

Recent Highlights

Mr. Trenton’s work has included:

  • Representing Kirin-Amgen in a biotechnology patent infringement case relating to erythropoietin. It went up to the House of Lords and is the leading UK case on issues of construction and non-literal patent infringement.
  • Representing the market leader in the supply of intermediate industrial bulk containers in a patent infringement action that went to the UK Supreme Court. It is the leading UK case on whether an act is repair or making, for the purposes of patent infringement.
  • Acting in an expert capacity advising on English law in a New York arbitration relating to a patent license dispute
  • Representing a major pharmaceutical company in a successful claim to revoke a patent relating to a well-known drug
  • Representing a major pharmaceutical company in a patent infringement case concerning the use of glucagon-like peptides for reducing body weight
  • Representing a client in a successful patent infringement case which went to the High Court and Court of Appeal involving snack food packaging equipment
  • Representing a client in a patent entitlement dispute against a leading defense contractor relating to patents concerning hovercushion landing gears on airships
  • Representing a major chemical company in a successful patent action relating to ion exchange resins for purifying acetic acid. It was followed by the first account of profits to go to trial for nearly a century.
  • Representing a client in a case against Unilever relating to ice cream bars and obtaining the first modern stay of patent proceedings in the UK pending a European Patent Office Opposition
  • Representing a client in a patent infringement case relating to technology involving the projection of images onto polymeric film
  • Representing a global online information and publishing business in relation to numerous trademark infringement and passing off disputes and oppositions concerning its brands
  • Representing a client in a successful trademark revocation action relating to the Bach Flower Remedies trademark
  • Representing a client in trademark infringement proceedings relating to the BOTOX trademark
  • Representing a client in successful trademark infringement proceedings in Malaysia concerning the H R Johnson trademark for tiles
  • Representing a global entertainment media company in a trademark infringement and passing off action against one of its major competitors in relation to the launch of a television channel
  • Representing a well-known tyre manufacturer in a successful trademark infringement and domain name dispute
  • Representing a client in a successful and leading trademark infringement and passing off case relating to cybersquatting
  • Representing a hostelling organization in relation to a number of trademark infringement disputes

Honors & Awards

Chambers UK has for several years ranked Mr. Trenton among the leading lawyers for intellectual property in the UK. He has also been recognized by The Legal 500, Legal Experts, IP Stars Handbook and Super Lawyers.

  • Chambers has reported that Mr. Trenton has "very sound judgment" and "can be relied upon to persuade the opposing side to make more compromises," is a "noted patent litigator" and "also a go-to for heavyweight trade mark disputes." He is "noted for his strategy and expert advice," with clients saying that he is "an excellent port of call for complex, delicate matters" and "hardworking and astute." Clients also admire his "ability to understand relationships and distil from those the correct amount of information needed."
  • The Legal 500 has noted that Mr. Trenton is "highly respected for his litigation expertise." Sources acknowledge him as "very bright indeed" and "very diligent and very focused, and an excellent technical lawyer."
  • Identified by Law360 as a thought leader on what intellectual property lawyers should know about the Brexit fallout in,"5 Things IP Attorneys Need To Know About Brexit," published June 24, 2016.

Publications & News


May 17, 2018

WilmerHale Partners and Practices Named Among Managing Intellectual Property's 2018 IP Stars

Managing Intellectual Property's 2018 IP Stars Handbook recognizes WilmerHale and 19 of its partners as leaders in the field. IP Stars identifies lawyers based on their knowledge, outcomes achieved for clients and unique strengths in the given practice area.

April 27, 2018

The UK Ratifies the UPC Agreement

On Thursday, April 26, the UK Government announced that it had ratified the UPC Agreement.  For the UPC and the EU unitary patent to commence, at least thirteen countries, including the UK, France and Germany, must have ratified the UPC Agreement.

December 4, 2017

EU Commission Publishes Major IP Package: Guidance Given on the EU Approach to SEPs and on the EU IP Enforcement Directive

Last week, the EU Commission published a number of important documents on IP. The documents include (i) a communication paper “Setting out the EU approach to Standard Essential Patents,” and (ii) a communication paper giving “Guidance on certain aspects of Directive 2004/48/EC of the European Parliament and of the Council on the enforcement of intellectual property rights.”

November 3, 2017

WilmerHale Lawyers, Practices Recognized for Outstanding Work and Reputation by Chambers UK 2018

Chambers UK: A Client's Guide to the UK Legal Profession 2018 ranked six WilmerHale lawyers and five practices for outstanding work and reputation.

October 12, 2017

The Legal 500 UK Recognizes WilmerHale Lawyers and Practices in 2017 Edition

In the 2017 edition of The Legal 500 UK, WilmerHale is named a top-tier firm for dispute resolution - international arbitration and crime, fraud and licensing - fraud: white-collar crime, and is recommended in four other practice areas. The guide also names five partners to its "Leading lawyers" list, and recognizes a total of 11 of the firm's London-based lawyers.

July 14, 2017

Actavis v. Eli Lilly1: Back to the Future—The UK Supreme Court Changes the Test for Patent Infringement

The UK Supreme Court rarely hears patent cases, and will only hear cases that it considers to be fundamentally important. The court's July 12 judgment is most significant for changing the test for infringement in the United Kingdom, widening the scope for infringement by equivalence.

June 22, 2017

The Brexit Negotiations (2): What is the UK's Opening Position

This is our second Alert on the Brexit negotiation, which started on Monday, June 19, 2017. Having outlined the EU's opening position, we now turn to that of the United Kingdom.

June 20, 2017

The Brexit Negotiations (1): What is the EU's Opening Position?

The Brexit negotiations started yesterday. After months of speculation as to what will be their focus, it may be useful to recall the European Union's opening position and the United Kingdom's opening position.

June 8, 2017

WilmerHale Partners and Practices Named Among Managing Intellectual Property's 2017 IP Stars

IP Stars identifies lawyers based on their practice and industry experience, and recommendations from their peers and clients.

November 30, 2016

The UK Decides to Ratify the UPC Agreement: The UPC and Unitary Patent to Proceed in 2017

Despite the Brexit vote, the UK has decided to ratify the UPC Agreement, and the UPC will now proceed in 2017. The opt-out sunrise period will likely commence in spring or summer 2017.


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Diploma in Intellectual Property Law, University of Bristol, 1997

Inns of Court School of Law, 1993

MA, Natural Sciences, University of Cambridge, Trinity Hall, 1990

Bar Admissions

England and Wales, Solicitor

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