The SCO Group Inc., on the eve of a court trial on remaining intellectual property issues it has with Novell Inc., filed for Chapter 11 bankruptcy protection on Friday.

Officials at Lindon-based SCO declined to comment about the filing, but the company issued a news release saying the filing will protect the company's assets "as it addresses potential financial and legal challenges."

The technology licensing and mobile services company filed for Chapter 11 in U.S. Bankruptcy Court in Delaware. SCO subsidiary SCO Operations Inc., also filed a reorganization petition.

The SCO Group said in its release that it plans to maintain normal business operations throughout the bankruptcy proceedings.

"We want to assure our customers and partners that they can continue to rely on SCO products, support and services for their business critical operations," Darl McBride, president and chief executive officer, said in the announcement. "Chapter 11 reorganization provides the company with an opportunity to protect its assets during this time while focusing on building our future plans."

The announcement said SCO's board of directors had unanimously determined that Chapter 11 reorganization "is in the best long-term interest of SCO and its subsidiaries, as well as its customers, shareholders and employees."

SCO said it had filed motions in bankruptcy court to "ensure that it will not have any interruption in maintaining and honoring all of its commitments to its customers. The motions also address SCO's continued ability to pay its vendors, the retention of various professional advisers and other matters."

But the company's litigation against International Business Machines Corp., Novell and others was not addressed in the news release.

The trial in its lawsuit against Novell, scheduled for Monday in U.S. District Court in Salt Lake, was stayed.

SCO was dealt a major blow Aug. 10 in its lawsuit over royalties from users of the Linux computer operating system. U.S. District Judge Dale Kimball ruled that Novell — and not SCO — owns the copyrights covering the Unix computer operating system. SCO had sued for slander of title after Novell publicly disputed ownership of the Unix copyrights and said that SCO didn't have the right to demand royalties from IBM.

SCO sued IBM in 2003 for more than $5 billion for copyright infringement and breach of contract, claiming IBM violated an agreement by putting Unix source code into the code for Linux, a free operating system that competes with Microsoft Corp.'s Windows.