CEDAR RAPIDS, Iowa — Private Media Group filed suit Thursday at US District Court in Cedar Rapids against two of the largest porn tube sites — EmpFlix.com and TnAFlix.com — claiming its operator is illegally streaming 75 of its videos.

According to a story reported on www.xbiz.com , YoungTek Solutions Ltd., which owns the pair of tube sites named in the suit, is a Cyprus-based company that also was sued last year by adult company Corbin Fisher, which claims 104 videos were been poached for TnAflix.com. Earlier this month, the Corbin Fisher suit was settled and the complaint was dismissed.

Private’s copyright suit names as defendants YoungTek and 100 John Does, as well as 100 John Doe companies, presumably YoungTek’s business partners or advertisers. It seeks $150,000 for each alleged infringement, as well as an injunction among other forms of relief.

Private says that the tube sites are powerhouses in the biz, with EmpFlix.com attracting 1.5 million surfers a day and TnAflix.com attracting 3 million, and that YoungTek generates “annual revenue estimated in tens of millions of dollars.”