Court actions for patent and utility models: Revocation/Partial revocation can be requested within 5 years after termination of the patent right (ex nunc effect in case of decision),
Typical grounds for nullity cases are identical to the ones defined by Art. 100 EPC and additionally the cases where Art. 52(2) EPC, 53(a) or 53(b) are applicable.
Non-bifurcated system: In response to an infringement action, the alleged infringer may initiate a nullity action and the court where the second action was filed may decide to hear the cases together.
European opposition/appeal procedures in parallel with national court procedure: Binding if a national validation of the same European patent in Turkey is concerned. It is likely that the EPO opposition procedure causes stay of national court procedure.
Expert panel system: A court panel is appointed, whose interpretation of the case will be influential. The judges are legally qualified. The panels are generally composed of technically and legally qualified members.
Post-grant amendment during court proceedings is a tricky issue: renouncing one or more claims is possible.