Berger, F.

patent infringement company application number copying strategy product trademark group research claim amendment signi difference applicant fi rms pendency time factor policy imitation importance table control ficant pendency market result trademark infringement analysis technology industry element activity protection share incidence *** process control group pendency times standard information effect european imitators insignia intensity berger patenting standardisation model journal fi lings document reproduction right patent infringement fi ling divisional citation problem r &d intensity piracy incentive property relationship fi rst observation hazard speci reference trademark infringements fi rm size signi ficant difference fi ling date signi ficant brand survival likelihood