Personalized Media Communications has made a legal complaint against Zynga, saying that Words with Friends, CityVille and FarmVille violate their patents. They argue that their patents from 1995 cover subscriber data and networked data, along with creating personalized output like targeted advertising.

“Many years of time and labor went into developing our inventions and securing the patents that permit their practice,” said PMC founder John C. Harvey. “It wouldn’t be right to sit by and allow them to be infringed.”