Germany's Federal Patent Court invalidated an Apple photo-management patent because Steve Jobs showed how the technology worked during a keynote months before the company applied for the patent in Europe.
The creation of a pan-European patent system will help spread abusive patent litigation to Europe and could lead to E.U.-wide sales bans on products, leading tech vendors have claimed.
A Seattle jury ruled in favor of Microsoft in a long-running patent dispute with Motorola over the h.264 video compression standard.
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.