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David Por



Por David
David Por



David is a partner in the Intellectual Property and Litigation department of Allen & Overy Paris. David is an experienced patent litigator, whose practice concentrates primarily on complex and cross-border intellectual property disputes.David’s practice focuses primarily on patent cases, in which he also advises on validity and freedom to operate issues. David has notably represented leading actors in the patent wars of the telecommunications sector, as well as numerous pharmaceutical companies in proceedings against generics.

In addition, David has also a strong experience advising clients on defamation disputes and media litigation.

David has also become a specialist of the interplay between intellectual property and competition law, and is regularly invited to speak at industry conferences on this topic. As such, he recently drafted the French Chapter of The second edition of the Intellectual and Antitrust Review.

David publishes regularly in the field of patent law. He notably co-authored the training manual for future UPC judges.

David is a member of the directing committee of the Intellectual Property Lawyers Association and on the board of directors of the European Patent Practitioners’ Association

"Partner David Por is also an authority on cross-border patent litigation, as a veteran of the telecoms patent wars and multiple high-profile actions on behalf of pharmaceutical innovators against generics, he is most comfortable handling matters at the intersection of IP and competition law." IAM Patent 1000 - France 2019

David Por - Ranked Silver in litigation (IAM Patent 1000 - France 2019)

"David Por advises clients from the technology and healthcare sectors on contentious IP matters. He defended Samsung Electronics in a number of patent litigation cases initiated by Technicolor. One client praises his co-ordination and co-operation with his team, while another states: "He is dedicated, a hard worker and gives comprehensive analysis."" CHAMBERS & PARTNERS 2019 - France (Intellectual Property)

“IP Star” Managing IP – Patents 2018

"The ‘very thoughtful’ David Por has ‘good analytical and communicative skills’." Legal 500 – EMEA 2017 – Intellectual Property: Patents - France

"The multifaceted David Por, 'a very promising practitioner who has all the keys to continue expanding his business'." IAM Patent 1000 – France 2017

"The ‘pragmatic and tenacious’ David Por is recommended." Legal 500 – EMEA 2016 – Intellectual Property: Patents - France

"David has excellent written advocacy skills, pragmatic business sense and charm." IP Stars - Managing IP – Patent contentious 2016-2017

News & insights

Publications: 11 DECEMBER 2019

Three practical tips to help brand owners protect their design rights

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News: 10 DECEMBER 2019

Artificial intelligence is the most significant risk to businesses globally, according to directors

When asked about global risks affecting their businesses, nearly three fifths (58%) of directors stated that technological advances (artificial intelligence and machine learning) are the most significant threat. This is according to the seventh annual Directors’ Liability report by international law firm Allen & Overy, in conjunction with Willis Towers Watson (NASDAQ: WLTW), the global risk advisory and insurance broker.

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Headshot of David Stone

Publications: 04 DECEMBER 2019

What should brand owners know about the treatment of design rights in the UK?

Global Head of IP David Stone speaks to Lexology Learn about design rights in comparison to other, more common IP rights and why brand owners are becoming much more interested in design rights in the UK.

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Publications: 15 NOVEMBER 2019

First French anti-anti-suit injunction: don't tell me what I can't do!

Following on from the first German anti-anti-suit injunction issued a few weeks ago in the Nokia v. Continental case, the Paris First Instance court did just the same in IPCom v. Lenovo.

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Allen & Overy LLP
52 avenue Hoche
75008 Paris

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Admitted to the Bar, Paris, 2003


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

Sciences Po Paris, 1998

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
  • SEP owners and their FRANC obligations, Intellectual Property Magazine, November 2015
  • CJEU ruling in Huawei/ZTE leaves the door open to injunctive relief in SEP litigation, Allen & Overy publication, July 2015
  • Spain v UPC: pragmatic ruling sees CJEU step away from patents, IP Magazine, May 2015
  • CJEU gives green light to implementation of the Unified Patents Court, Allen & Overy publication, May 2015
  • Advocate General Wathelet takes the 'middle path' in Huawei v ZTE, Allen & Overy publication, November 2014
  • The 17th cut of the UPC Rules of Procedure: the highlights, Allen & Overy publication, November 2014
  • Adapter la justice à la vie des affaires, Le Nouvel Economiste, October 2014
  • Weighed and measured, but will it be found wanting? Where is the CJEU with Spain’s legal challenge to the unitary system?, IPPro Magazine, August 2014
  • Spain acts the CJEU to annul the new unitary patent system, E-Commerce Law & Policy, July 2014
  • La juridiction unifiée du brevet (JUB) reçoit un soutien croissant des entreprises, Options Droit et Finance, July 2014 co-authored with Laëtitia Bénard
  • Overview of Life Sciences Law in France, Chambers and Partners Guide of Life Sciences 2013, co-authored with Laëtitia Bénard, Olivier Fréget and Olivia Klimis
  • Guilty even when proved innocent, Managing Intellectual Property, December 2010- January 2012
  • Recent evolutions and foreseeable trends of French product liability rules: apocalypse later?, Revue internationale de droit comparé, April-June 2002, co-authored with Olivier Debouzy
  • Product liability: French law under scrutiny, Les Echos, May 2002