Philip Jeffrey

Philip Jeffrey


Philip is a Chartered UK Patent Attorney and European Patent Attorney with a First Class Honours degree in Physics and a PhD in holographic information processing.  He joined Dehns in 1994 and became a Partner in 2002.


Type of clients and client work 

Philip acts for several major US and Asian corporations including Waters Corporation, Micromass, Baker Hughes Incorporated, Xiaomi and Fujifilm. He regularly provides detailed patentability, infringement, validity, due diligence and other strategic advice and analysis to both large corporations as well as SMEs. Philip is experienced in IP strategy.

In addition to extensive UK and EPO drafting and patent prosecution experience, he has experience in UK revocation and post-grant proceedings and in EPO Opposition and Appeal hearings. He has a significant amount of experience effectively prosecuting US patent applications including US Examiner interviews.

Philip has a very high UK, EPO and US patent allowance rate. 



Philip is an experienced patent attorney with technical expertise across a wide range of high-technology physics and engineering fields including photonics, optoelectronics, mass spectrometry, oil drilling and exploration, nanotechnology, holography, lasers, optical devices, printers, smartphones and optical communication systems. 


Qualifications and Memberships 

  • UK Registered Patent Attorney, 1999
  • Professional Representative before OHIM, 1999
  • European Patent Attorney, 1998
  • Certificate in IP Law, University of London, 1995
  • Fellow of the Chartered Institute of Patent Attorneys
  • European Patent Institute


Higher Education 

PhD, Southampton University, “Holographic Information Processing”, 1994

BSc Hons (First Class), Southampton University, Physics, 1991



Philip regularly visits the US, Japan and China. He is a member of Dehns’ Management Board and is Dehns’ Business Development Partner.


“UK Patent Box Proposals”, Intellectual Property Magazine, June 2010. Click here to read article.


“Evolution of IP practices and the emergence of new business models for IP firms” MIP Global IP & Innovation Summit, Shanghai, 3 September 2014

“UK and European IP Developments”, Houston Intellectual Property Law Association Annual Conference, Houston, September 2013

“Recent Developments in European Practice", Houston Intellectual Property Law Association Annual Conference, Houston, October 2012