Ilya Kazi

UK & European Patent Attorney

Ilya now leads teams cost-effectively managing substantial portfolios numbering tens, hundreds and even thousands of patents for a number of substantial multi-national corporations. He also still enjoys giving hands-on strategic advice to startups and growing companies or investors on IP strategy and personally handling complex oppositions and appeals before the EPO. In the latest edition of The Legal 500, one source comments: Ilya 'is second to none in being able to sit down with a new client and get straight to the crux of the issue they need to resolve. He is excellent both in detail and in longer term strategy, very often coming up with business directions that the clients have not thought of.’ In earlier editions of The Legal 500 guide, Ilya has been noted as 'a talented strategist', 'a master of his craft' (2016), and that he has ‘great knowledge of the medical device sector; he gives suggestions instead of just taking instruction’ (2017). The 'insightful, analytical' and 'exceptional' Ilya is recommended in the latest edition of IAM Strategy 300 for being 'the ideal IP strategist – he gets people on side easily and quickly, has no airs or graces and puts clients first every time.' He also features as a recommended individual in the 2019 edition of IAM Patent 1000, where he is 'trusted to handle commercially vital disputes'. He was ranked as an IP Star in the 2018 World IP Survey.


Year joined: 1996

Qualifications: MA (Cantab) EPA CPA


Ilya has handled approaching 4000 applications across the spectrum of electrical, electronic, communications, compression, computing, display and optical technologies, clean technologies including heat pumps and energy recovery and control systems, battery technologies, materials and nano-technology, bio-informatics, robotic surgery, diagnostics and medical devices of all descriptions. He is also a private pilot with interest in and experience of aeronautical, aerospace and defence equipment, engines, control systems and composite construction techniques and advising on obtaining strategic protection relevant to certification. Ilya obtained first-hand experience of US patent law and practice within a major Silicon Valley law firm, which now enables him to provide his clients with creative and comprehensive advice as to how to obtain the maximum level of worldwide protection for their technology, or to deal effectively and pragmatically with the portfolios of competitors. 

As well as extensive and exceptionally successful experience of European Patent Office opposition and appeal proceedings, Ilya has been involved in commercial dispute resolution within formal mediation proceedings and litigation in the Intellectual Property Enterprise Court and English High Court and he has successfully creatively negotiated positive outcomes for clients charged with infringement on several occasions. He also advises on exploitation and licensing and on strategic and cost-effective commercial portfolio development and is the author of numerous published articles on law and strategy. Ilya has been noted on several occasions in Legal 500 and in Chambers and has featured for the last three years in the IAM Strategy 300 list of the world’s leading IP strategists. 

Ilya works with a number of startups and investors from angels to larger VCs and has been involved in putting together IP behind 9 figure exits (as well as many smaller ones). He also serves on the Chartered Institute of Patent Attorneys committee devoted to raising public awareness of IP and has provided expert commentary on numerous strategic IP issues for National and International media including CNN, Channel 4, The Times, The FT, The Daily Telegraph, The Economist.

Ilya is qualified as a Higher Courts Patent Litigator by examination. He recently successfully defended British Gas, alongside Margaret Arnott and Miranda Kent, against a £30m claim in Meter tech v British Gas. To read more about the case please click here


Ilya has a Master’s degree in Natural Sciences from the University of Cambridge, specialising in Physics and having conducted research within the field of medical imaging. He qualified as a Patent Attorney in 1996, and holds a certificate in intellectual property from the University of London.

Membership & Organisations

Ilya is a member of CIPA; EPI; AIPLA; AIPPI; LES; FICPI; AOPA.

IP Star rosette 2018 ik  IAM 300 recommended individual 2019    IAM 1000 recommended individual 2019

Recent Work

Much of Ilya’s recent work has been a string of successful Oppositions and Appeals in the IT and Medical Devices sector, including revoking a key patent for Gogo LLC relating to in flight wi-fi and a number of optical and diagnostic matters.


  • 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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