The U.S. International Trade Commission in Washington issued the import ban in May 2012 after deciding that Motorola Mobility devices infringed a Microsoft patent for a way mobile phones synchronize calendar events with other computers. Microsoft’s lawsuit, filed yesterday in Washington, says that order isn’t being enforced.

U.S. Customs and Border Protection, after having secret meetings with Google, continued to let the Motorola Mobility mobile phones enter the country even though Google has done nothing to remove the feature at the heart of the ITC case, Microsoft said in the complaint.