Armengaud Guerlain, a boutique fully dedicated to IP law, excels in prosecution and litigation matters across patents, trademarks, designs and copyright. Co-head Stéphane Guerlain, with over 35 years’ experience, leads contentious matters blending strategic advice and procedural expertise, while co-head Catherine Mateu covers international desks, focusing on cross-border enforcement and UPC representation. Betty Dachary supports SEP negotiations, Flora Erbibou is a key contact for evidence-driven disputes, and Pierre Camadini aids with UPC pleadings. The firm’s multilingual, collaborative approach and innovative remote capabilities ensure cost-effective, high-quality service for global clients.

August Debouzy boasts a leading patents practice distinguished by its balanced integration of lawyers and patent attorneys, many dual-qualified as European patent attorneys and equipped to handle Unified Patent Court representations. The team excels in comprehensive patent services, from high-stakes litigation and EPO oppositions to strategic prosecution, freedom-to-operate analyses, and licensing. The practice is jointly steered by François Pochart and Grégoire Desrousseaux, both engineers-turned-lawyers with deep expertise in life sciences, telecoms, and mechanics, and Lionel Martin, who specialises in litigation across the telecoms, energy, medical devices and automotive sectors. Julia Cohen-Solal advises French and foreign clients on their industrial property strategy, in particular for patent matters.

Bird & Bird excels in high-stakes litigation in the electronics, telecoms and life sciences segments, and leverages the firm's international network to shine in cross-border matters. Practice head Anne-Charlotte Le Bihan drives complex multi-jurisdictional disputes and strategic portfolio work. Thierry Lautier, a dual-qualified attorney and European patent attorney, strengthens the firm's UPC expertise, whereas Laurent Labatte and Marylis Clerc play pivotal roles in major UPC and French court cases.

Casalonga stands out for its integrated model uniting patent attorneys and litigators to deliver end-to-end patent services from prosecution and EPO oppositions to national and UPC enforcement and has a wealth of experience in the mechanics, electronics, chemistry, pharmaceuticals, and biotechnology sectors. The team is consists of Arnaud Casalonga, a veteran in cross-border patent disputes, Caroline Casalonga, expert in European patent litigation, Olivier Delprat in mechanics and electronics, Marianne Gabriel in pharmaceuticals and SPCs, Jean-Baptiste Lecoeur in pharmacy and chemistry and Virginie Martin-Charbonneau in chemistry. Ghislain de Trémiolles also works in electronics, software, telecommunications and AI.

Blending contentious and transactional expertise, Gide Loyrette Nouel A.A.R.P.I. operates comfortably across the pharmaceuticals, medical devices, telecommunications and mechanical innovations segments. The team is co-led by Raphaëlle Dequiré-Portier, a specialist in life sciences and mechanics litigation, Emmanuel Larere, who is well versed in biotech and electronics patents, and Jean-Hyacinthe de Mitry, who is adept in multijurisdictional validity and infringement matters alongside IP transactions. Marie-Ange Pozzo di Borgo represents clients of various industries in cross-jurisdictional patent disputes, both on the merits and in preliminary injunctions.

HOYNG ROKH MONÉGIER excels as a pan-European IP boutique, renowned for seamless cross-border patent litigation with integrated teams across offices. The team’s portfolio extends to handling high-stakes validity, infringement and disputes over fair, reasonable and non-discriminatory terms for licensing standard-essential patents. The team is led by Sabine Agé, an expert in standard-essential and biotech patents. Denis Monégier du Sorbier represents French and international companies in many sectors, including aeronautics, agriculture and food. Benoît Strowel is an all-round litigator coordinating multi-jurisdictional strategies, while Sophie Micallef works in patent enforcement. Amandine Métier specialises in telecommunications and pharma-related matters. Marta Mendes is another key contact.

Leveraging the firm’s global network, Jones Day demonstrates proficiency in patent and trade secret litigation, while also frequently advising on cross-border enforcement and validity challenges. With established expertise in the life sciences, electronics and mechanics segments, the practice’s portfolio extends to prosecution, oppositions and transactional support. THe team is jointly steered by Thomas Bouvet, a veteran in high-stakes patent disputes across biotech and tech, patent enforcement expert Emmanuel Baud , and Edouard Fortunet, who leads on IP transactions. Colin Devinant focuses on patent validity and infringement litigation, while Eddy Prothiere has experience in matters relating to the electronics, medical devices, mechanics and chemistry industries.

Linklaters excels in patent litigation, including UPC actions and complex validity and infringement disputes in the pharmaceuticals, telecommunications and life sciences industries. The practice integrates antitrust expertise for standard-essential patent and FRAND matters while also advising on IP-driven transactions and is co-led by Pauline Debré, a port of call for cross-border enforcement, and Gaëlle Bourout, who was promoted to partner in May 2025 and specialises in life sciences patents. Laetitia Nicolazzi advises clients on the drafting and negotiation of contracts related to artwork commissioning, assignment of rights and licensing agreements.

Schertenleib stands out as exclusively dedicated to patent litigation with noteworthy strength in the life sciences and pharmaceuticals industries. The practice excels in high-stakes disputes, regulatory counsel and multi-jurisdictional matters and is headed by founder Denis Schertenleib, a physicist with a PhD in molecular neurobiology focusing on patent litigation, arbitration and pharma regulatory matters. Ombeline Degèze-Péchade is renowned for innovative patent and regulatory strategies, and Marc Lauzeral is a name to note for cross-border patent and SPC disputes.

Simmons & Simmons' pan-European patent litigation practice integrates dual-qualified experts for seamless prosecution, oppositions and enforcement advice across the telecoms, electronics and life sciences industries. The team excels in cross-border disputes before national courts and the UPC, offering strategic advice on standard-essential patents and fair, reasonable and non-discriminatory licensing terms. The team is co-led by Abdelaziz Khatab, a veteran in high-stakes validity and infringement actions, Sarah Bailey, and digital innovations specialist Georgie Courtois, who joined from De Gaulle Fleurance & Associés in June 2025.Mickaël Da Costa departed in May 2025.

Abello IP Firm

A&O Shearman specialises in high-stakes pharmaceutical and tech disputes with the team’s area of expertise encompassing preliminary junction proceedings and litigation with mulit-jurisdictional elements. Global IP litigation head Laëtitia Bénard leads the practice and is adept at life sciences enforcement and defending blockbusters against generics. Charles Tuffreau is recommended for UPC litigation, validity challenges and infringement seizures, leveraging engineering expertise for complex tech cases. Elise Romelly is a key contact for pharma litigation and transactional work.  David Por left the team in March 2025.

Dentons fields various litigation experts and  integrates global resources for cross-border enforcement in the life sciences, IT and pharmaceuticals segments. The practice demonstrates strength in validity disputes, SPCs and trade secret audits, offering tailored strategies for innovation protection and is led by Loïc Lemercier, a specialist in high-stakes infringement and ownership claims, who is well supported by Tom Blanchet

DTMV & Associés‘s portfolio encompasses patent litigation, validity challenges and trade secret disputes across pharmaceuticals, electronics and telecoms. The practice excels in multijurisdictional enforcement, leveraging deep technical expertise for defense strategies. Thierry Mollet-Viéville covers the full spectrum of IP law with a focus on international patent litigation and a wealth of experience in the pharmaceuticals segment, while  Pascal Lefort a name to not for clients seeking support with automotive innovations. Further important team members include the expert for technology patents  Eleonore Gaspar, Thomas Cuche, who handles SEP disputes, and Grimaud Valat, whose practice covers the full range of digital IP transactions.

Herbert Smith Freehills Kramer LLP's multidisciplinary offering includes patent litigation, prosecution, post-grant proceedings and licensing, particularly in the technology, internet and life sciences sectors. The practice adeptly handles complex domestic and UPC disputes alongside strategic advice on emerging innovations. The team is led by Alexandra Neri, who is renowned for  patent enforcement in the digital and consumer tech spaces. Emmanuel Ronco is a specialist in patent-dependent transactions and AI compliance, Vincent Denoyelle is well wersed in data-driven patent strategies, and Sébastien Proust is adept in software and tech patent conflicts. Frédéric Chevallier departed in June 2025.

Hogan Lovells (Paris) LLP boasts a formidable pan-European patent litigation practice, excelling in cross-border validity, infringement and trade secret disputes across the life sciences, telecommunications and electronics industries. The team combines experience in multijurisdictional matters with technical expertise, delivering pragmatic enforcement and defense solutions and is led by Stanislas Roux-Vaillard, who is recommended for high-stakes patent disputes and UPC proceedings. Adrien Bonnet offers niche expertise in aerospace patent defence.

Jeantet‘s focus areas encompass cross-border patent enforcement and validity disputes with particular proficiency in the biotech, life sciences and mechanics sectors. The team provides advice on innovation protection, including litigation to licensing and audits. The team is co-led by Benjamin May, an expert in multi-jurisdictional infringement actions who joined from Aramis in January 2025 and Frédéric Sardain, a specialist in technology transactions and data compliance. Tristan Cassagne is another name to note.

Pinsent Masons LLP 's sector-driven patent practice focuses on the life sciences, electronics and telecoms segments and is adept at coordinating pan-European infringement and validity disputes before national courts and the UPC. The team integrates contentious enforcement with strategic patent prosecution and oppositions, offering pragmatic solutions for innovation protection. The group is led by Virginia de Freitas, an expert in cross-border patent litigation who was promoted to partner in May 2025. Former practice head Jules Fabre departed  in April 2025.

Taliens, a Franco-German IP boutique, excels in cross-border patent enforcement and validity disputes, while also demonstrating proficiency in infringement actions, SPC proceedings and trade secret protection. The group is co-led by Grégoire Triet, experienced in life sciences patent disputes, and Jean-Frédéric Gaultier, a specialist in tech patent litigation. Both are well supported by Tougane Loumeau and Sophia Gintersos.

Bignon Lebray excels in infringement, validity and ownership disputes across the life sciences, biotech and pharmaceuticals sectors. The practice provides innovation strategies ranging from research and development agreements to licensing and regulatory compliance and is headed by Nicolas Moreau, who shines in transactional matters. Barbara Bertholet is well versed in patent enforcement.

De Gaulle Fleurance & Associés sets itself apart through its integrated approach, enabling seamless cross-practice collaboration on patent litigation, validity disputes and R&D transactions across. The practice is jointly steered by Louis de Gaulle, who is recommended for the full range of commercial patent enforcement, Julien Horn, an expert in IT-patent litigation, Francine Le Péchon-Joubert, who frequently supports clients in trade secret defenses, and Cécile Théard-Jallu, a specialist in healthcare regulations and data-driven IP contracts.

Gowling WLG frequently acts in cross-border disputes before French courts and the UPC, offering integrated enforcement, FRAND licensing, and innovation protection advice with particular strength in the life sciences, telecommunications and technology segment. The practice is co-headed by Céline Bey, who is well versed in infringement actions, and Marianne Schaffner, an expert in multi-jurisdictional validity challenges. Alexis Augustin focuses on pharmaceutical disputes.

Lavoix houses both patent attorneys and dedicated litigators to provide clients with a full-service full service offering covering patent prosecution, opposition and litigation support.  The practice handles infringement, validity and ownership disputes before French courts and the UPC, and advises on licensing and technology transfer contracts. The practice is led by Camille Pecnard, who is experienced in multijurisdictional patent enforcement, and Pierre Emmanuel Meynard, who excels at the intersection of pharmaceutical regulatory and patent law. Martin Simonnet is a name to note for technology disputes.

Osborne Clarke is renowned for its strength in patent prosecution, litigation and portfolio management. The team is co-led by Claire Bouchenard, who has authority in advertising and marketing IP disputes and Xavier Pican, a specialist in blockchain and data licensing. Julia Darcel is recommended for enforcement matters, while Christophe Arfan demonstrates proficiency in metaverse interllectual property protection.

ADVANT Altana's focus areas include patent litigation, licensing and portfolio strategy, with the team offerng a wealth of experience in the  life sciences, technology and consumer goods sectors. The team provides integrated advisory on infringement, validity and R&D contracts, with strong cross-border coordination via the ADVANT alliance and is jointly steered by Pierre Lubet, a port of call for technology disputes, Laura Morelli , who excels  in healthcare enforcement, and Jean-Guy de Ruffray.

BCTG Avocats offers litigation and advisory services, focusing on infringement, revocation, ownership disputes, as well as strategic IP management. The team provides end-to-end support, from patent protection and licensing to anti-counterfeiting and cross-border enforcement and is headed by Gaëlle Bloret-Pucci, who brings experience in  multi-jurisdictional disputes for luxury and retail clients.

Clifford Chance operates comfortably across cross-border litigation, infringement, revocation, and transactional matters, withparticular strength in the technology, life sciences, and energy sectors. The team coordinates pan-European disputes, including UPC cases, and advises on licensing, trade secrets, and regulatory issues. Practice head David Por joined from A&O Shearman in March 2025 and focuses on high-profile patent enforcement and SEP/FRAND disputes. A dual-qualified lawyer and engineer specialising in patent litigation, Cyril Riffaud joined alongside Por.

CMS Francis Lefebvre handles a busy workload, including infringement and revocation actions, as well as advice on R&D contracts, licensing, and portfolio audits, combining patent expertise with capabilities in regulatory and tax aspects. Important team members include Jean-Baptiste Thiénot, who excels at the intersection of contentious patent issues and life sciences regulation and offers niche expertise in and employee inventiontopics.

DLA Piper provides focused patent counsel in France, supporting global clients with infringement, validity and licensing disputes in life sciences, technology and consumer sectors. The practice offers pragmatic strategies for portfolio management and cross-border enforcement. The team is led by Frank Valentin, experienced in high-value patent litigation and supported by associate Cédric Meiller, who plays a key role in complex validity challenges and trade secret audits.

Goodwin is renowned for its end-to-end patent counsel in the life sciences and technology segments,with the team's portfolio ranging from licensing and collaborations to litigation and regulatory advice. The practice frequently supports venture-backed innovators through financings, M&A and royalty monetisations, leveraging deep sector fluency for strategic asset protection. Practice head Marie Fillon demonstrates strength in cross-border biotech deals.

Squire Patton Boggs  handles infringement litigation, cancellation actions, ownership transfers, and related contracts for international clients in the electronics, transportation, pharmaceuticals, energy, media, telecommunications, and software sectors. The team also operates comfortably across licensing, unfair competition, and IT-related disputes, with a focus on cross-border matters. Practice head Catherine Muyl offers a wealth of experience in patent litigation and enforcement matters. Marion Cavalier supports on both contentious and advisory work.

Taylor Wessing's areas of expertise include cross-border litigation, technology transfers, and innovation strategies, with strength in the pharmaceuticals, life sciences, technology, electronics, energy, and transportation segments. Frequently coordinating pan-European disputes and advising on regulatory issues, the team is led by Jules Fabre, who joined from Pinsent Masons LLP in May 2025 and focuses on high-stakes patent and SPC litigation for generics and biosimilars. Marina Jonon also joined from Pinsent Masons LLP in May 2025 and handles life sciences disputes. Clémence de Marassé-Enouf joined from A&O Shearman in June 2025, bolstering the firm's offering regarding enforcement in the pharmaceuticals and technology sectors.