Woodland Hills- AS big a problem as pirating and bootlegging are for the Hollywood studios, they’re an even worse curse on the adult-film industry.

And “1 Night in Paris,” the biggest-selling X-rated video in history, has been hit hard. Yesterday, Greg Piccionelli, the lawyer for World Wide Red Light District – which holds the copyright on the sex tape starring Paris Hilton and Rick Salomon – sued in L.A. federal court alleging Mordechai Kattan, owner of Woodland Hills One Hour Photo, made and sold counterfeit DVDs.

“We’re about to file a number of other lawsuits,” Piccionelli told us, “and we are offering rewards to people who identify copyright infringers.”