Christopher Hamer

UK & European Patent and Design Attorney

Chris is recommended by The Legal 500, where sources have praised his 'high-quality advice on patents involving a chemistry angle', for being 'pleasant to work with' and for having 'outstanding technical ability' (2015). He 'impresses with his scientific expertise, negotiating skills and willingness to go the extra mile whenever required' (2016) and in the latest edition, he is described as being 'always keen to provide support' (2020). He is a Recommended Individual in the IAM Patent 1000 guide for 2019, where he is praised for being 'an anchor in the toughest negotiations, he is consistent and concise with his advice. Chris is a truly remarkable combination of technical talent and client care.' 


Year joined: 2004

Qualifications: BSc EPA CPA


Chris works in the field of chemistry, with particular expertise in oil and petrochemical technologies, catalytic processes, polymers and composite materials, food chemistry, natural food supplements and absorbent articles. He is also involved in protecting inventions in the environmental sector, including solar cells, biofuels, biochemicals and green solvents. He is one of the world's leading attorneys in the field of ionic liquid technologies and represents clients in four continents. His practice areas include drafting and prosecution of global patent families, opposition and appeal proceedings before the European Patent Office where he has significant experience and a successful track record having acted for international companies such as BP, Ineos, Petroliam Nasional Berhad, AarhusKarlshamn, Borealis, Sasol, Toray, Novartis, and the QUILL Research Centre, as well as strategic planning and freedom-to-operate advice and litigation.  In addition, Chris is also experienced in dealing with design and copyright infringement and validity. Chris is highly regarded for his pragmatic commercial expertise, which has helped his clients to grow from small SMEs to valuations of in excess of £300 million.  He is also actively involved in advising on Petronas’s highly acclaimed mercury removal processes


Chris has an Honours Degree in chemistry from Bristol University. He qualified as a Chartered and European Patent Attorney in 2002. Before joining Mathys & Squire in 2004, he spent two years working for a German firm of patent attorneys in Munich. Chris became a Partner in 2006.

Membership & Organisations

Chris is a member of the American Intellectual Property Law Association and the Licensing Executives Society and has been an invited lecturer at universities and conferences. Chris has been recommended by Chambers for the last five years and clients have praised him for his "high-quality advice on patents involving a chemistry angle" and “outstanding business acumen”.

IAM 1000 recommended individual 2019


  •  Patent Applications

  • Patent Drafting and Filing
  • Patent Enforcement
  • Patent Portfolio Management
  • Patent Oppositions
  • Litigation
  • IP Strategy
  • Commercialisation
  • Freedom to Operate
  • Due Diligence
  • Licensing

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