iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Xinuos is the successor plaintiff to SCO in a separate lawsuit against IBM and Red Hat, filed in 2021. Its appeal centers on whether a lower court wrongly treated Xinuos’s copyright theory as a claim that it owned the copyrights. As of September 30, 2026, the available appellate record does not establish a final decision after the appeal’s oral argument.
This is not simply the original SCO v. IBM case under a new name. Xinuos acquired specified SCO assets, including code at issue in the dispute, but the two lawsuits have different claims and procedural histories.
Who is Xinuos, and how is it connected to SCO?
A Southern District of New York opinion described SCO as Xinuos’s predecessor in interest. Xinuos was then known as unXis and purchased specified SCO assets, including code involved in the IBM dispute. That asset history explains why Xinuos brought a later case; it does not mean that every claim in SCO’s original lawsuit simply continued unchanged.
The background goes back to Project Monterey. On October 23, 1998, SCO and IBM signed a Joint Development Agreement to develop a new UNIX operating system. IBM withdrew from the project in May 2001. SCO later alleged that IBM’s handling of UNIX-related technology violated its rights.
#1 Best Overall
How the original SCO v. IBM case differs from Xinuos’s lawsuit
| Issue | Original SCO v. IBM | Xinuos v. IBM and Red Hat |
|---|---|---|
| Plaintiff | SCO, which later entered bankruptcy and sold specified assets to unXis/Xinuos. IBM’s 2021 Form 10-Q records the original suit. | Xinuos, described by a 2022 Southern District of New York opinion as SCO’s successor in interest for specified assets. |
| Filing | March 6, 2003, according to IBM’s Form 10-Q. | March 31, 2021, according to the 2022 court opinion. |
| Defendants | IBM. | IBM and Red Hat. |
| Claims and focus | Copyright infringement, unfair competition, interference with contract, and breach of contract tied to AIX, Dynix, and Linux, as described in IBM’s Form 10-Q. | Claims involving alleged use of code and market conduct. The appeal, as characterized in a June 2026 report, concerns whether the copyright theory was improperly treated as an ownership claim. |
| Procedural position | IBM reported that a Utah federal court ruled for IBM on SCO’s remaining claims in February 2016. On October 30, 2017, the Tenth Circuit affirmed all but one remaining claim, which it remanded. | The Second Circuit appeal opened in April 2025. A June 22, 2026 report described oral argument before a three-judge panel; the sources available through September 30, 2026, do not establish a final appellate merits decision. |
What happened to SCO’s original lawsuit?
The original case was part of a broader series of disputes about who owned UNIX-related copyrights and what rights SCO had to assert. In a related Novell trial in March 2010, the jury found that Novell owned the UNIX and UnixWare copyrights, according to IBM’s later Form 10-Q. IBM’s filing states: “The jury found that Novell is the owner of UNIX and UnixWare copyrights.”
IBM also reported that the Utah federal court ruled in its favor on SCO’s remaining claims in February 2016, after which SCO appealed. The Tenth Circuit’s October 30, 2017 disposition affirmed all but one remaining claim and remanded that claim. These rulings form important background, but they do not by themselves resolve the distinct issues in Xinuos’s later case.
What is Xinuos arguing on appeal?
The central distinction is between owning a copyright and alleging that someone infringed a copyright or breached a license. The June 22, 2026 report by Tom’s Hardware said Xinuos argued that the district court had treated its copyright theory as an ownership claim. That framing matters because a ruling about who owns a copyright is not automatically the same as a ruling about whether conduct infringed a copyright or violated a license.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Xinuos has also accused IBM and Red Hat of conduct affecting the UNIX/Linux operating-system market. Tom’s Hardware attributed this statement to Xinuos: “IBM and Red Hat have abused their control over the Unix/Linux operating system market for far too long.” It is an allegation, not a court finding.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Does IBM still face UNIX copyright claims?
The record supports a narrow answer: IBM faced a separate Xinuos lawsuit filed in 2021, and Xinuos’s appeal was pending after oral argument in June 2026. The cited materials available through September 30, 2026, do not establish a final appellate merits decision. They also do not establish that the original SCO case remains active as a continuing lawsuit against IBM. The appeal’s outcome should not be described as a win for either side unless a subsequent court decision confirms it.
Quick Recap
Key dates in the SCO-to-Xinuos dispute
- October 23, 1998: SCO and IBM sign the Project Monterey Joint Development Agreement, as recounted in the 2022 Southern District of New York opinion.
- May 2001: IBM withdraws from Project Monterey.
- March 6, 2003: SCO files its original lawsuit against IBM, according to IBM’s Form 10-Q.
- March 2010: A jury in the related Novell trial finds that Novell owns the UNIX and UnixWare copyrights, according to IBM’s filing.
- February 2016: The Utah federal court rules for IBM on SCO’s remaining claims, as reported by IBM.
- October 30, 2017: The Tenth Circuit affirms all but one remaining claim and remands that claim, according to IBM’s Form 10-Q.
- March 31, 2021: Xinuos files its lawsuit against IBM and Red Hat, according to the 2022 court opinion.
- April 28–29, 2025: The Second Circuit appeal is opened, according to the appellate docket.
- June 22, 2026: Tom’s Hardware reports that a three-judge panel hears Xinuos’s appeal.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
