David Por


David is a litigator with more than 20 years of experience, whose practice concentrates primarily on complex and cross-border patent disputes.

He is recognised as a leading practitioner by all major directories, and presides the Association des Praticiens Européens des Brevets. 

He represents clients in a wide variety of industrial sectors, with a particular focus on hi-tech, telecommunications and electronics. David has notably represented leading actors in the telecommunications patent wars. He also advises on validity and freedom-to-operate issues.

David has also become a specialist of the interplay between intellectual property and competition law. He co-organises one of the main conferences on standard-essential patents and FRAND licenses, a topic on which he is regularly invited to speak at industry conferences. He also co-authored the training manual for future UPC judges.


Pro bono

Advising Mozaik RH, an NGO focussing on fighting inequality and discrimination in the job market, on the creation of an application matching job applicants from disadvantaged backgrounds and companies offering openings

Published Work

  • Co-author of the sections of the training manual for UPC judges on the patentability of pharmaceutical and biotechnological inventions and on Articles 123(2) and 123(3) EPC
  • Changes in the global patent litigation landscape: The impact of the UPC, Martch 2024
  • UPC Insights: Divisions disagree on rules for service on non-European defendants, January 2024 
  • UPC Paris Central Division to decide on whether affiliates are the “same party” as their parent, October 2023 

Leadership Positions And Professional Affiliations

  • Member of the Association des Juristes de Sciences Po.
  • Member of the Association des Praticiens Européens des Brevets (APEB)
  • Member of the International Association for the Protection of Intellectual Property (AIPPI) – French group
David Por has become a prominent figure of the French patent world
Chambers Global, Intellectual Property: Patents, 2024
Highly dedicated, multilingual, top for UPC cases
Juve Patent France, 2024


  • Band 2, Intellectual Property: Patents, Chambers Global, 2024
  • Gold, IP/Patent, IAM Patent 1000, France, 2023
  • Global Leader, National Leader, Who's Who Legal, Patents and Life Sciences, France, 2023
  • Band 3, Intellectual Property: Patents, Chambers Global/Europe, France, 2023
  • Leading Individual, Intellectual Property: Patents, Legal 500 EMEA, France, 2023
  • Band 3, Intellectual Property: Patents, Chambers Global/Europe, France, 2022



Admitted to the Bar, Paris, 2003


Graduate Degree, International and European Law, University of Paris X (Nanterre), 2000

Sciences Po Paris, 1998


English, French
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.