Melco
Melco is said to have been sued by Microsoft (like TomTom), but only one source suggests this. According to other sources, Microsoft simply signed a Linux patent deal with Melco with Melco's consent. Our posts about the products and the company, in order of relevance (all from 2009):
Boycott Melco
Microsoft Sued Melco Group Over Linux and Microsoft is Likely to Lose Another Patent Case (VirnetX)
Treasonous Melco-Microsoft Linux Deal Already Costing Melco Business
Why the Melco-Microsoft Deal is a Form of Racketeering
Novell and Xandros Promote Microsoft Patents, SFLC Warns About “Microsoft Patent Aggression” (SFLC warns about Melco)
A Look at the Microsoft-funded SCO Lawsuit in Light of Newer Anti-Linux Microsoft Lawsuits (Reminder of Melco's settlement)
Novell is Insulting Ubuntu/Canonical Again (Groklaw blames parent company)
Verdict on Microsoft’s Linux Patch: Embrace, Extend, and Assimilate (lessons from Melco)