Mailing the story:

Google Inc. GOOG -1.82% said it filed an antitrust complaint Thursday in Europe arguing that Microsoft Corp. MSFT -2.13% and Nokia Corp. are using proxy companies to brandish patents and hurt the prospects of Google's Android mobile-phone software to the advantage of Microsoft's technology. Google also plans to share its complaint about patent "trolls" with U.S. competition regulators. The Internet-search giant alleges that Microsoft and Nokia have entered into agreements that enable entities such as Canada-based Mosaid Technologies Inc. to legally enforce their patent rights and share the resulting revenue.