chapter and verse
I didn't get much of a handle on the case from the brief article. Here for all is the core of the judgement:
U.S. Patent No. RE37,802 "deals with the field of multiple access communications using spread spectrum modulation," according to the U.S. Patent and Trademark Office.
Wi- Lan claimed in a 2011 lawsuit that Apple infringed on its '802 patent "by using certain industry standards in the field of wireless technology."
A jury found in October 2013 that Apple was not infringing and that claims 1 and 10 of Wi-Lan's patent are invalid. The patent has 40 total claims.
U.S. District Judge Rodney Gilstrap vacated part of that unanimous verdict Thursday, saying the invalidity finding was not based on enough evidence.
"The court is unable to find that the jury's finding as to invalidity of claims 1 and 10 of the '802 patent is supported by substantial evidence," Gilstrap wrote. "Accordingly, the jury's invalidity verdict cannot stand."
Apple needed "to prove invalidity by clear and convincing evidence" but "no evidence was presented of complex multipliers in the prior art," the 16-page opinion states.
Claim one of Wi-Lan's patent describes "a transceiver for transmitting a first stream of data symbols," and claim 10 explains "means for receiving a sequence of modulated data symbols."
Though Gilstrap vacated the judgment as to the validity of claims 1 and 10, he denied all other aspects of Wi- Lan's motion for judgment as a matter of law.
The actual patent is very interesting, to me it looks like a reasonable invention. However, it is in fact a 1998 submission that attempts to claim a 1992 priority date, and in true submarine fashion, only surfaced in 2002. Of course by this time similar developments of comms theory were already in operation and included within international standards. Whether these "working" systems actually use the means described, whether these means actually work in practice, or whether better methods have been found, I don't know. I'll have a look if there is some interest. It would be a good case to look at.