 In February 2010 , Activision was sued by the Patent <unk> Group ( PCG ) for releasing Guitar Hero products with false patent claims , with the PCG asserting that games like Guitar Hero 5 and Band Hero were marked with up to 10 patents that are not used within the games along with several other improper patent pending claims . PCG claims that " Acts of false marketing deter innovation and <unk> competition in the marketplace . " PCG 's qui <unk> lawsuit is seeking up to $ 500 per unit sold if Activision is found liable . 
