 In February 2010 , Activision was sued by the Patent Compliance 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 stifle competition in the marketplace . " PCG 's qui tam lawsuit is seeking up to $ 500 per unit sold if Activision is found liable . 
 In February 2010 , Activision was sued by the Patent Compliance Group ( PCG ) for releasing Guitar Hero products with false patent claims , with the PCG asserting that games like Guitar Hero 5 and Band Hero <a href='uninflect' title='1'><mark>were</mark></a> marked with up to 10 patents <a href='null_relcl' title='2'><mark>that</mark></a>are not used within <a href='None' title='3'><mark>the</mark></a><a href='negative_concord' title='4'><mark>games</mark></a> along with several other improper patent pending claims . PCG <a href='uninflect' title='5'><mark>claims</mark></a> that " Acts of false marketing deter innovation and stifle competition in the marketplace . " PCG <a href='null_genetive' title='6'><mark>'s</mark></a>qui tam lawsuit is seeking up to $ 500 per unit sold if Activision is found liable . 
In February 2010 , Activision was sued by da Patent Compliance Group ( PCG ) for releasing Guitar Hero products with false patent claims , with tdaPCG asserting that games like Guitar Hero 5 and Band Hero was marked with up to 10 patents ain't used within no games along w several other improper patent pending claims . PCG claim dat " Acts of false marketing deter innovation and stifle competition in thdaarketplace . " PCG  qui tam lawsuit is seeking up to $ 500 per unit sold if Activision is found liable .