He is recognized 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.