Calypso Wireless (fka CLYW)

[plaintif2000]

"Although it appears that the actions of Rambus may very well have been intentionally anticompetitive and deceitful, the language of this ruling should nevertheless serve as a caution for any company or individual that participates in or is a member of any standards committee. Regardless of the conduct of the company or individual, the mere membership in a standards organization may result in an inability to later enforce patents that claim any portion of the approved standard. Accordingly, participation in such committees should always be carefully considered and monitored at the highest executive levels of any participating company"

Source:

http://www.localtechwire.com/article.cfm?u=14850

so really we have catch 22, had clyw participated in UMA etc
standards they would have not been able to extend their patent
on the other hand because they did not the technology has
had diffaculty in widespread adoption