Sony has filed a lawsuit against Bleem, the developer of a PlayStation emulator for PCs.
The news comes days after a court dismissed Sony's copyright claims against Connectix, which makes Virtual Game Station for the Mac and PC.
According to a Bloomberg report, the lawsuit follows the lifting of a preliminary injunction against Bleem, barring it from using images of PlayStation video games in advertisements.
The latest lawsuit accuses Bleem of infringing patents covering audio and visual elements of Sony's Playstation. The suit was filed in a San Francisco district court last week.