Internet auction giant eBay is one of the nation’s largest exchanges for event tickets, and in early 2007 the company bought StubHub for $307 million.

eBay helped to create the modern model of online ticket exchanges because it allows fans and brokers to quickly list event ticket inventory for resale in a single destination.

The company was sued by Ticketmaster in 2007 for contract infringement for allegedly violating contracts Ticketmaster had with several arenas. The lawsuit centered on the Lynyrd Skynyrd/Hank Williams Jr. “Rowdy Frynds Tour” of the same year, because StubHub had been named the official premium ticket vendor for the tour. Ticketmaster said that violated its ticketing contracts with several of the venues the tour was going to visit. The two sides settled the case in late 2008 under undisclosed terms.

eBay and StubHub were also sued by the City of Chicago in 2008 for allegedly not collecting the city’s 8 percent Amusement Tax on event tickets. The companies do not believe it should be held responsible for collecting the tax of individual resellers.

The company unofficially teamed up with TicketNetwork in 2009 to not allow people to resell President Obama Inauguration tickets, which had been distributed free.