The move will make it easier for them to collaborate, and is a defensive move against Apple
Samsung owes Apple a check for smartphone patent infringement, but the multimillion-dollar award is equal to several days' profit for each company.
A Samsung patent was also declared invalid
IBM acquired more U.S. patents than any other company for the 21st year in a row. But Google has quickened its patent pace and climbed to No. 11 in the rankings.
The ruling confirms an earlier trade court ruling and marks another victory for Apple.
Motorola Mobility had argued that a Microsoft patent was invalid to avoid an ITC ban
Microsoft can appeal the ruling
A patent reform bill targeting so-called trolls needs more time to mature, several groups say.
A legal war between EMC and flash startup Pure Storage has escalated to charges of patent infringement and illegally obtaining a storage array to mine it for intellectual property.
Samsung wanted the court to stay a damages retrial pending reexamination of an Apple patent, but a judge said no.