The options available to a European patentholder are to send a warning letter and seekan out-of-court settlement with the assumedinfringer. A warning letter is subject to noformalities. If no solution can be found inthis way or through arbitration or mediation(to which the patent holder and the allegedinfringer must agree), the patent holder mustenforce its patent through a court action.Commencing a patent suit is not subject tothe prior serving of a warning letter.


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