• B.A. Philosophy, 1988
    University of Ottawa
  • LL.B., B.C.L., 1990
    University of Montréal

Year of Call/Admission

  • Québec, 1991

Languages Spoken

  • French
  • English

Julie Desrosiers

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+1 514 397 7516
+1 514 397 7600 (fax)

Julie Desrosiers is the leader of Fasken Martineau's Global Technology & Intellectual Property group.

Ms. Desrosiers regularly acts on behalf of high technology businesses in connection with injunctions, seizures and procedures seeking to protect elements of their intellectual property or their trade secrets and strategic information. Currently, Ms. Desrosiers’ practice is almost exclusively in IP litigation, primarily in the field of patent litigation with an emphasis on pharmaceutical patents, including major patent infringement cases.

Recent and current cases include: as co-counsel for Lundbeck, won major patent NOC litigation over escitalopram, against 7 generics over 4 years (including 2 appeal wins in the Federal Court of Appeal); lead counsel for Lundbeck in section 8 case over citalopram; lead counsel to Cedrom SNI in three class actions by freelancers claiming $500M for infringement of copyright by electronic reproduction of their work; co-counsel to Eurocopter in a successful patent infringement case concerning an helicopter landing gear; as lead counsel to Lundbeck won Escitalopram patent impeachment action; co-counsel to Duchesnay in ongoing Diclectin NOC litigation against three generics; represented LEO pharma in a NOC proceeding against Teva where the Court confirmed the validity of LEO pharma’s patent; appeared before the Supreme Court of Canada on behalf of FICPI in a major patent litigation concerning the test for the utility of a patent in Canada.

Managing IP writes about her: Julie Desrosiers “has got a real fighting spirit – she can rip apart a case. She focuses incredibly hard on the detail and offers in-depth analysis. She has a deep understanding of chemistry, and can take in very complex questions in this discipline. This is an essential skill, because you need to be able to explain it to a judge who doesn’t understand it at all.”

Honours and Awards

  • Chambers Canada 2018 for Intellectual Property: Litigation
  • Recognized as one of Canada's best Intellectual Property Law lawyers in The Best Lawyers in Canada (2015-2018 editions)
  • Recognized as one of the most influential women in Intellectual Property Law in the world by the 2017 edition of IP STARS Top 250 Women in IP
  • Recognized by IAM Patent 1000 – The World’s Leading Patent Professionals 2017
  • Recognized in the Canadian Legal Lexpert Directory 2017 in the area of Litigation and Intellectual Property
  • Recognized in 2017 as a WIPR Leader in Intellectual Property
  • Named in the 2016 edition of Who’s Who Legal in the area of Patents
  • Recognized by Legal 500 2015-2016: Montreal-based national group head Julie Desrosiers is ‘creative, responsive and extremely knowledgeable in IP matters’; she represented Leo Pharma in proceedings seeking to prohibit the Minister of Health from issuing a notice of compliance to allow Teva’s sale of a generic version of Dovobet.
  • Recognized by IAM Patent 1000: Handling crucial proceedings for Duchesnay and LEO Pharma, Julie Desrosiers and Marie Lafleur “are really phenomenal, have a great work ethic and are creative in their approaches.” “Desrosiers has a deep understanding of our technology, which enables her to mount the best defences. Lafleur has spent many years serving the drug industry and knows it inside out.” (2015-2016)
  • Recognized by the The Legal 500 Canada 2015-2016 editions in the area of intellectual property
  • Recognized by IAM Patent 1000 – The World’s Leading Patent Practitioners 2014 for Litigation
  • The firm was named in the “2013 Canadian Impact Patent Cases of the Year” category for its work on the Apotex v Lundbeck case. Lundbeck was advised in these proceedings by a team that included Julie Desrosiers, Marie Lafleur, Christian Leblanc and Hilal El Ayoubi.
  • Recognized as one of the leading Canadian practitioners in the area of Intellectual Property by the Canadian Legal Lexpert Directory
  • The patent litigation team at Fasken Martineau was named a Canadian IP “Rising Star” at the International Legal Alliance Summit (2013)
  • Received the Queen's Jubilee Medal for her important contribution in Attorney General of Canada v. JTI-Macdonald Corp. et al., (2007) SCC 30