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Several U.S. states are requesting a five-year extension of the antitrust judgment against Microsoft Corp. to ensure the company's continued compliance, according to a Tuesday court filing.

Sections of the 2002 antitrust judgment are due to expire next month. A status hearing is scheduled for Nov. 6 with Judge Colleen Kollar-Kotelly of the U.S. District Court for the District of Columbia.

In the filing, the states argue that Microsoft could use the continued dominance of its Internet Explorer browser to choke off other emerging middleware technologies from Google Inc. and Adobe System Inc. that work in close conjunction with Web browsers.

The filing mentions Google Gears and Adobe Integrated Runtime (AIR), technologies that allow for offline use of Internet-centric applications.

"Because web-centric technologies are so dependent on Web browsers and servers for access to consumers, they are particularly susceptible to impediments that Microsoft could interpose were the final judgment were to expire now," the filing said.

The states contend Microsoft could "tilt the playing field" to favor its new Silverlight multimedia technology, which competes with Adobe's Flash.

The states also argued there have been continued problems with the program under which Microsoft licenses communication protocols to enable other vendors' products to more smoothly work with ones from Microsoft.

The technical documentation has been inadequate over the last five years, while Microsoft has continued to gain market share with its servers. Microsoft only recently delivered more rewritten documentation that is being evaluated, the filing said.

The document was filed by California, Connecticut, Iowa, Kansas, Minnesota, Massachusetts and the District of Columbia.