All but two of the top 30 companies targeted by "patent trolls" seeking licensing fees are in the technology sector, with Apple leading the way.
Samsung Electronics claims that Ericsson demanded billions more for patent licenses after their license agreement expired in 2007.
Facebook has designed a system that would allow individuals and advertisers to make direct connections to those physically nearby that share similar interests or are open to receiving certain advertisements.
Google has added 79 patents to the list of patents for which it pledges not to sue any user, distributor or developer of open-source software, unless first attacked.
Action is expected Friday in two separate patent infringement cases brought by Apple against Samsung.
The Obama administration has vetoed a decision by the U.S. International Trade Commission to ban the import of certain Apple products to the U.S. on the grounds they infringed a Samsung Electronics technology patent.
The United States International Trade Commission expects to complete its investigation next week into allegations of patent infringement between Apple and Samsung.
The U.S. Patent and Trademark Office has rejected claims of an Apple patent that figures prominently in a patent infringement lawsuit against Samsung Electronics, according to documents filed by the South Korean company in a U.S. federal court.
Patent firm Eolas Technologies lost an appeal against Google, J.C. Penney, Yahoo and Amazon.com in a long-drawn lawsuit involving key Web patents.
The U.S. International Trade Commission has launched a pilot program to test whether early rulings on identified crucial issues in some investigations could limit unnecessary litigation, saving time and costs for all sides.