Jean-Pierre Mignard


Founder of Lysias Partners

As a member of the Paris bar since 1974, Jean-Pierre Mignard has a well-established expertise in criminal defense of natural and legal persons, whether governed by public law or private law. Mr. Mignard handles inter alia, press, media, communication, literary and artistic property matters and disputes. Jean-Pierre Mignard has been the counsel of several States (Republic of Djibouti, Cameroun, Chad, Benin etc.…) in border disputes and in the negotiation of petroleum concessions agreements. He also represents public figures, including many congressmen, elected officials, and former ministers. Jean-Pierre Mignard recently worked on the following high profile cases :

  • The Elysée eavesdropping case
  • The UTA DC-10 attack
  • City of Paris cases
  • The Eurotunnel trial
  • The Erika oil tanker wreck
  • The Clichy-sous-Bois and Villiers-le-Bel cases
  • The Clearstream trial
  • Mediapart trial in the Liliane Bettencourt case
  • Referral of the Republic of Côte d’Ivoire to the International Criminal Court on the orders of President Ouattara
  • Confédération Nationale du Crédit Mutuel v. Crédit Mutuel Arkéa
  • EDF and Henri Proglio v. AMF
  • Eliane Houlette, former President of the Parquet National Financier (PNF), v. Conseil Supérieur de la Magistrature
  • 238 million public interest judicial agreement (CJIP) between Crédit Suisse and the PNF

He is a senior lecturer at the Paris Institute of Political studies where he teaches criminal law. He teaches media law as part of the Paris Institute of Political Studies’ journalism postgraduate program. Jean Pierre Mignard is the founding partner of the Lysias firm (which became Lysias Partners in 2006), and currently the president of its executive board. Jean-Pierre Mignard is the co-chairman of the Témoignage Chrétien magazine’s editorial board.


  • Ph.D. thesis in Comparative criminal law, “ cybercriminality and cyber-repression, between disorder and global harmony” with distinction, Panthéon-Sorbonne University of Paris I (2004)
  • DEA postgraduate diploma in Criminal Sciences, Panthéon-Sorbonne University of Paris I (1980)
  • Master’s Degree in Private law, Pantheon-Assas University of Paris II (1972)


  • Nuclear safety. Law and world governance, in collaboration with J.P. Mignard and M. Mabile, Bruylant Editions, Brussels, April 2012
  • Clichy affair, dead for nothing, with E. TORDJMAN, Stock, Paris 2006
  • Justice for all, with A.VOGELWEITH, La découverte, Paris, 2001
  • The left wing takes action, with F.HOLLANDE, J-P. GAILLARD, J-Y.LE DRIAN, J-P.JOUYET, Jean-Claude Lattès Editions, 1985