Véron & Associés, a French patent litigation firm, maintains a database of French patent court opinions translated into English. The judgments are from Parisian district courts, court of appeals, and the Cour de Cassation. Years of coverage are 2001 through 2012. The quality of the translations is excellent, preserving the substance of the legal holdings without sacrificing readability. They also provide copies of the original French language opinions.
French Patent Case Law in English:
http://www.frenchpatentcaselaw.info/
http://www.veron.com/en/FPCL.asp
Hat tip to Jean Gasnault