Mr. X ./. Rolanfer and Becker, Court of Cassation, Commercial Chamber (Cour de cassation, Ch. Com.), 3 April 2012

The French Supreme Court specified the rules for the application of the doctrine of equivalence in the assessment of infringement of a process patent, holding that a patented process is considered to be infringed under the doctrine of equivalence when both means have the same function in order to obtain the same result as the claimed invention despite any differences between the claimed means and the allegedly infringing means.

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