Less than a year after suing Germany’s Stolmár & Partner over a failed combination, intellectual property boutique RatnerPrestia has agreed to drop breach of contract, fraud and other claims against the Munich-based patent firm.

At one point, the two firms worked together on international IP issues affecting RatnerPrestia’s clients, but settlement papers filed Friday in a Philadelphia federal court put an end to a soured relationship. The agreement resolves allegations that the German firm’s leaders misled King of Prussia, Pennsylvania-based RatnerPrestia during discussions of a possible merger between the two firms.