A trade group representing hundreds of software vendors is considering a lawsuit against eBay for what it calls widespread sales of counterfeit software on the auction site.

The Software and Information Industry Association (SIIA) has offered eBay several suggestions for stemming the sale of pirated software on its site, but the auction giant has rejected most of those ideas, said Keith Kupferschmid, senior vice president of the SIIA's antipiracy division. "We are at our last straw here," Kupferschmid said Friday. "If eBay continues to stiff-arm us ... then we will certainly consider litigation as an option."

The SIIA doesn't have immediate plans to file a lawsuit, but its members talked about the possibility during a meeting in May, Kupferschmid said. The lawsuit would likely accuse eBay of secondary copyright infringement, he said.

An eBay spokeswoman defended its efforts to police against software piracy. EBay has put volume restrictions on software sellers, and it has eliminated short-term auctions on categories of software most likely to be counterfeit, said Nichola Sharpe of eBay.

EBay's VERO (Verified Rights Owner) program, in place since 1998, allows rights owners to contact eBay and have items removed from auction listings. EBay has long worked with SIIA on software piracy, and eBay officials plan to reach out to SIIA after hearing about the potential lawsuit, Sharpe said.

SIIA has implemented some SIIA suggestions, but it must weigh the effect of SIIA's requests on its business, she added. "Our view is: Collaboration is key," she said. "We've put a lot of (antipiracy measures) in place on our own."

Earlier this month, in a similar lawsuit against eBay, a judge for the U.S. District Court for the Southern District of New York ruled that eBay has taken sufficient steps to protect against sales of fake Tiffany jewelry items.

EBay pulled Tiffany items suspected of being counterfeit as soon as they were reported to the auction site, Judge Richard Sullivan said in his ruling. Trademark law does not require eBay to preemptively remove listings of Tiffany jewelry suspected of being fake, the judge said.

Sullivan's ruling came two weeks after Tribunal de Commerce in Paris fined eBay US $62.7 million for allowing the sale of Louis Vuitton Malletier and Christian Dior Couture counterfeit goods. EBay has said it will appeal the decision and spends about $20 million a year on efforts to remove counterfeit products from its site.