Civil Litigation involving patent disputes shall be heard by competent intermediate courts designated by the Supreme Court. The administrative litigation involving patent disputes shall be heard only by Beijing No. 1 Intermediate Court. During the course of civil litigation, the defendant could initiate an invalidation proceeding with SIPO to challenge the patent validity. If dissatisfied with the official decision, either party may initiate an administrative litigation against SIPO. For invention patent lawsuit, the civil court may not suspend the trial before the admin. proceeding result, while for utility model and design patents, it normally suspends until result of the administrative proceeding.