Simon Christiaën

Partner at Lazareff Le Bars - Patent and IP Litigation & Dispute Resolution




  • May 02, 2015


  • Paris, France

    Active Country

  • Paris


  • English, French


  • Practice Areas

  • Specialization


Simon Christiaën, doctor of law and Partner at Lazareff Le Bars, is a specialist in intellectual property and an expert in patent litigation and arbitration (infringement, revocation, validity, ownership, unexecuted contract...).

His excellent technical know-how allows him to assist both SME/SMIs and international corporate groups, and to advise in the context of complex technological content procedures as in well as in unfair competition litigation.

Simon Christiaën has developed an acclaimed domestic and international litigation practice as counsel across various industry sectors including mechanical engineering, electronics, building, information technology (IT), mechatronics, automotive, aerospace, industrial design, industrial chemistry, energy, biotechnologies (pharmaceuticals and parapharmaceuticals), medical devices, cosmetics, and food products. His expertise includes the organisation of upstream protection, analysis, due diligence, freedom-to-operate (FTO), strategic use and valuation of property rights.

Areas of expertise :
- Patent litigation and arbitration
- Intellectual property litigation and arbitration
- Private international intellectual property law
- Customs law regarding specifically IP

Work history

Partner, head of Patent & IP department
Lazareff Le Bars
2013 – Present (2 years) Paris

Partner - Intellectual Property Department
Taylor Wessing France
2008 – 2013 (5 years) Paris

Director (senior manager) - IP/IT Department - Patents & Designs Cell
PwC (Landwell & Partners)
1999 – 2008 (9 years) Paris

Lamy Véron Ribeyre & Associés
1997 – 1999 (2 years)

Lamoureux law firm (cabinet)
1993 – 1997 (5 years)

Education and qualifications

Grenoble II Law School - France
PhD, International intellectual property law
1985 – 2005

CUERPI - UPMF - France
Postgraduate, majored in industrial property, private law, mention "industrial property"
1989 – 1991

Grenoble II Law School - France
Master's degree, Private law, options "industrial property law" and "private international law"
1985 – 1989


• Interviews published in ‘Legal 500’, ‘Décideurs juridiques’ et ‘Option Droit & Affaires’.

• Technical studies and speeches regarding “inter partes” and “ex partes” interim injunctions proceedings and patent infringement damages in France during 2011 and 2012.
• Technical article published in ‘Pharmaceutical Law Insight’ of April 2010 (vol. 6, n°4): “French intellectual property in the pharmaceutical field”.
• Technical articles regularly published since 2006 in ‘Option Finance’: “Jurisdictional Competence in the Matter of Actions for Infringement Regarding New Legal and Statutory Rules”, “Provisional Actions”, “Patent Protection in the EU, between Unity and Diversity”, “Limits of Choice of the First Filing Country in International Order” (parts I, II and III) and “Employee’s Inventions in International Order”.
• Regular writer, since 2000, of technical articles in ‘Lettre Juridique, Fiscale et Sociale’ (LJFS) “Infringement seizure: a French Exception”, “The Notion of ‘Insurmountable Difficulties’ Concerning Patent License”, “The Impact of Patent: between Myth and Reality”, “‘IP’ Clauses in Work Contracts”, “Patentability of E-business Procedures”, “Patents due to the Internet Assault”.

• Speech “Protection Strategies by the Way of Patent Law”, ESDES Lyon, July 5th, 2007.
• Organizer of two sessions for the conference-debate “Reassuring, Defense and Development of Intellectual Property” organized by Landwell & Partners on 15 June and 19 October 2004.
• Speech “The Marriage of Law and Technology” concerning the particular use of a text mining software regarding patent and patent design, for the account of INVENTION MACHINE FRANCE (European User Group Meeting, 5th Conference – Sardinia, Baia Chia, 15 and 16 October 2001) and of its North American parent company.

• Writing of the legal section “France” (Chapter 10) of the collective work Mastering the IP Life Cycle-Towards a Tax-efficient Management of Intellectual Property Pights”, coll. PwC, published in 2005 and updated in 2008.
• Co-editor, under the direction of M Pierre-Louis Véron, of the collective works “Law and Practice Being Carried Out” (the section on infringement seizure, coll. Dalloz Action, publ. Dalloz, November 1998) and “Infringement Seizure” (coll. Dalloz Référence, Droit de l’entreprise, publ. Dalloz, September 1999).

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