Nokia and HTC <2498.TW> won a key ruling by the European Patent Office that a patent used by German firm IPCom in legal battles against the two mobile phonemakers was invalid in its current form.
A clash over immigration law will go before the U.S. Supreme Court this week, pitting the state of Arizona against President Barack Obama in a case with election-year political ramifications for him and Republican rival Mitt Romney.
Carl Icahn won a victory in his push for a sale of diabetes drug maker Amylin Pharmaceuticals Inc after a Delaware judge fast-tracked the billionaire investor's lawsuit to allow a proxy fight.