Especially since Apple settled with Nokia before the '381 patent could be tested in Delaware court.
Thanks for any real info!
The info is found in Apple's claim against Samsung in California (pg 17):
On April 28, 2010, Nokia requested ex parte re examination of all twenty claims of the 381 patent based on four prior art references, three of which were not cited in the original prosecution. (Zhang Decl., Ex. 40.) Nokia relied on the same prior art for its invalidity contentions in supplemental interrogatory responses that it provided six months later, in effect conceding that it had not been able to find any better prior art, despite a year of litigation. ( Id.,Ex. 41.) The Patent Office subsequently found Nokias arguments unpersuasive and confirmed the patentability of all twenty claims
Emphasis mine.
Nokia, which has considerable resources and expertise in IP law, had a year to come up with something to break this patent - and was unable to do so.
Its worth noting that this re-examination of the '381 Patent was part of the litigation Apple found itself in with Nokia - a case Apple ultimately ended up settling with Nokia, agreeing to pay a licensing fee.
I don't think anyone felt that Nokia was being "uncompetitive" or "evil" by pressing its Patents claims against Apple. (As more than one commentator has noted, there probably isn't a cellphone or smartphone made that dosn't infringe on one or more patents.) Which is why I find the reaction to Apple's legal action against Samsung somewhat puzzling.