x0d writes with news that Google filed an EU antitrust complaint against Microsoft and Nokia on Thursday, claiming they are using proxy companies to make smartphone-related patent claims in an attack on Google's Android business. From the article: "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. Google, which hasn't been sued by Mosaid or related firms, described its filing with European regulators as a pre-emptive measure against a developing legal hazard for Android partners. The threat is that if phone makers perceive a significant legal risk in using Android, they may opt instead for Microsoft's Windows Phone software."