Nokia is suing Apple for infringing patents on mobile phone technology for the iPhone.

- Ten alleged patent infringements involve wireless data, speech coding, security, and encryption.

- 40 firms - including most mobile phone handset makers - were allowed to use the firm's technology, but that Apple had not signed an agreement.

- Nokia claimed in last two decades, they invested approximately 40bn euros (£36.2bn; $60bn) on R&D.

- Earlier this month, Nokia posted its first quarterly loss in a decade amid falling sales.

- Meanwhile, Apple reported profits of $1.67bn in the three months to 26 September.