The US International Trade Commission (ITC) has ruled in favour of InterDigital and its patents in the early stages of a case against Microsoft and Nokia-related handsets.
The first-round loss for Microsoft is being seen as a good victory by InterDigital, which has welcomed the decision and the associated backing of its cause.
Microsoft was found, at this early stage, to have infringed on InterDigital's intellectual property and will be defending itself against the charges.
"This is one step in the process and we look forward to the full Commission's thorough review," the firm said.
"We have a successful track record challenging patent assertion entities that misuse industry standards."
A US import ban is a possibility, but InterDigital seems to prefer negotiation and a coming together on 'fair, reasonable, and non-discriminatory terms'. It has had some success here, and was signing deals with Nokia way back in 2006.
"We're obviously very satisfied with today's ruling, which underscores the strength of InterDigital's portfolio and our long track record of developing and licensing some of the core wireless technologies that have helped drive the growth of our industry," said Lawrence Shay, executive vice president for intellectual property, and chief intellectual property counsel, at InterDigital.
"We hope it will form the basis for the final determination by the ITC. We also look forward to continued discussion with Nokia and Microsoft Mobile to achieve a licence on fair and reasonable terms."
InterDigital has pursued this case since 2007 and will be hoping for advantageous terms.
The company came to a patent accord with Samsung last year, and revealed that the Korean firm is now paying royalties.
"This agreement with Samsung shows how our long-standing patent licensing framework and process can lead to effective, productive discussions and eventual resolution on fair and reasonable terms," InterDigital said at the time.
"The agreement also underscores the broad portfolio of technologies we've contributed and continue to contribute to the entire industry, and represents another important step towards our efforts to bring a significant portion of major terminal unit providers under licence."
British Airways blames 'global systems outage' for IT meltdown
Mark Zuckerberg mercilessly trolled by Harvard student newspaper after return to university he dropped out of 12 years ago
'Unauthorised user' blamed by Harvard for insulting Mark Zoinkerberg
Android under attack from 'Judy', Google Play Store malware that has infected up to 36.5 million users
Yet more Android malware discovered on the Google Play Store
Airport believes new system will be more reliable than GPS or Google Maps