Microsoft could face another lawsuit from a patent portfolio company over technology within its SQL Server database.Timeline, of Seattle, Wash., said Monday it terminated a limited license agreement forged with Microsoft in 1999 after the software giant allegedly breached its terms. Timeline also charged that Microsoft\u2019s SQL Server infringes on patents held by Timeline concerning online analytical processing.As a result, Timeline filed a motion in U.S. federal district court in Seattle, asking to add Microsoft as a defendant in a case against ProClarity, a maker of add-on reporting and data visualization products that complement Microsoft\u2019s SQL Server. Timeline said it was required to file the motion under seal.In June 2005, Timeline sued ProClarity for patent infringement. Microsoft and Timeline have a lengthy legal history. Microsoft licensed technology from Timeline for its SQL Server in 1999. But both companies came to legal blows over whether Microsoft could sublicense the technology to other companies that added other programs to the database software, such as ProClarity.A Washington state judge ruled in 2003 that Microsoft\u2019s ability to sublicense the technology was "substantially limited," and Timeline was entitled to licensing fees.Timeline\u2019s business focuses on its patent portfolio, and it\u00a0sold the operating assets of its software licensing, maintenance and consulting business in August 2005.Timeline licenses software technologies to companies such as Hyperion Solutions, Cognos and Oracle.-Jeremy Kirk, IDG News Service (London Bureau)This article is posted on our Microsoft Informer page.\u00a0For more news on the Redmond, Wash.-based powerhouse, keep checking in.Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.