Microsoft is currently in court over distributing infringing a copyright that AT&T uses for speech-coding technology.
According to the Associated Press that is covering this case, it could further implicate other companies when it comes to copyright infringement of technologies that are copyrighted in the United States but when asking for liability from abroad it could create even high liabilities.

A quote from a law professor stated the following:

“Almost every patent infringement lawsuit against Microsoft asks for damages for U.S. sales as well as foreign export sales,'’ Crouch said. Microsoft has acknowledged its liability for domestic sales. Microsoft lawyers claimed the ruling by the U.S. Court of Appeals for the Federal Circuit in favor of AT&T “threatens to impose massive liability on U.S. software companies” and could prompt companies to move their research facilities out of the country.”

News Source: Toronto Star