patient dispute-Microsoft's Lumia smartphones avoid US import ban

"In April, the U.S. trade judge ruled that Microsoft used InterDigital's
patents, considered standard in the industry, but refused to pay for
a license to them. An import ban would have affected any Microsoft
phone using 3G cellular technology, including its Lumia
smartphones."
"After reviewing that ruling, the commission said on Friday that
Microsoft did not violate the patents, but it did not address the issue
of fair licensing for essential patents."
"Earlier this month, Microsoft sued InterDigital in Delaware federal
court, claiming InterDigital violated U.S. antitrust law by breaking
promises to offer licenses on reasonable terms.

Microsoft's smartphones can continued to be imported and sold in
the US, according to a ruling this week by the U.S. International
Trade Commission. Their decision overturned a previous ruling by a
judge in April, who declared Microsoft had violated two patents owned
by InterDigital.
The dispute over these patents, which concern optimising a
cellphone's power to connect to a network, first started way back in
2007, when InterDigital sued Nokia, claiming that the company had
infringed on their property by using them in their phones without the
proper licence or payment. Microsoft acquired Nokia's Devices and
Services business in 2014, which included the ongoing court battle
with InterDigital.