The U.S. International Trade Commission sided with Alcatel-Lucent in a patent infringement suit launched against the telecom equipment provider by Microsoft. The software giant accused Alcatel-Lucent of infringing on four software patents for a system that integrates telephones with computers for calls, messages and videoconferencing.

In its ruling, the ITC said it “determined that there is no violation” of intellectual property rights.

Initially, a judge found Alcatel-Lucent guilty of infringing on one of the four patents.

As expected, Alcatel-Lucent said it was pleased with the commission’s decision, while Microsoft said it was disappointed.