Christopher Hamer


UK & European Patent Attorney and UK Design Attorney

European Patent Litigator


Chris is consistently recommended by The Legal 500 in which he is commended for his “unbelievable ability to analyse complicated concepts incorporating chemistry” (2023), “never-ending energy and inspiration” (2022), as well as his “exemplary” service, and “commercial strategy” advice (2021). He has also been commended for his “high-quality advice on patents involving a chemistry angle” and for being “pleasant to work with.” “Chemistry maven” Chris has been recommended in the IAM Patent 1000 guide, noted for his “vast legal know-how.” He is described as “ionic liquids expert” (2022) “an anchor in the toughest negotiations”, “consistent and concise with his advice” and a “truly remarkable combination of technical talent and client care.” Chris is also ranked as a Leading Individual in JUVE Patent‘s Rankings UK, in which he is recommended for his technical speciality in the field of chemistry.



Memberships & organisations

Recent work


“Chris Hamer’s unbelievable ability to analyse complicated concepts incorporating chemistry, physics and mechanical disciplines, and somehow render the interaction clear and easy to read, is outstanding. I can say with total transparency that the strength of our patent portfolio is in good part thanks to Chris.”

The Legal 500 (2023)

“Ionic liquids expert Hamer is the lead partner for China and has acted in 100 hearings at a success rate of 90%.”

IAM Patent 1000 (2022)

“We really enjoy working with our team of attorneys at Mathys & Squire. They have great technical knowledge which is very helpful for us as they understand our business. Overall, our feedback is very positive and we are happy with the service they provide.”


“Chris’ support and commitment to us over the years and his ability to understand and put chemical and physical processes in order in a relatively short amount of time is amazing, particularly when it has taken us months to put it all together.”


“Mathys & Squire is the strongest partner we have in Europe. Their work is of the highest quality, is very thorough and sets a benchmark for international collaboration on sophisticated patent issues. They layout options in terms of success rates which is invaluable in helping me make commercial decisions on how to proceed.”


“Over the last 20 years Mathys & Squire has assisted us in maintaining a 100% success rate at achieving patent grant and we’ve found the team as a whole is very professional, proactive, and easy to work with. Chris Hamer, especially, has played a pivotal role in this.”


“Chris Hamer and his team have put in a very good effort to understand our business and work very well with our inventors, despite their some times difficult mindset. We go to meetings enjoying the discussions and leave the meetings with a very good energy for moving ahead. Problem-solving is a big part of their mindset, highly appreciated by us. Difficulties and issues are for solving with never-ending energy and inspiration.”

The Legal 500 (2022)