Back in late 2009 Apple countersued Nokia after Nokia filed suit against Apple for using 10 wireless technologies they patented without compensation. Many companies patent technologies from Nokia since Nokia was one of the leaders in wireless innovation and was around before many of the existing companies in the wireless market. It looks like Nokia's claims were legitimate and unlike other companies Apple was just trying to avoid paying Nokia what they were due as Nokia announced they entered into patent license agreement with Apple.
This agreement will result in settlement of all patent litigation between the two companies. Apple will may a one time payment with future royalties to Nokia for the terms of the confidential agreement. Nokia has invested EUR 43 billion in R&D and has over 10,000 patents. This outcome should have a positive impact on Nokia's financials later in 2011.