A key attorney tasked with making money from BlackBerry’s intellectual property has left the company. Victor Schubert was a key player in BlackBerry’s patent licensing strategy but it’s not clear why he left.

Monetising BlackBerry’s intellectual property is a key part of CEO John Chen’s plan for turning the ailing smartphone maker around.

BlackBerry’s revenues have declined for six straight years as sales of its smartphones have tumbled.

Schubert’s exit follows the recent departure of Mark Kokes, who led the overall strategy to persuade companies to pay licensing royalties to use Blackberry’s 40,000 global patents.

These cover operating systems, networking infrastructure, acoustics, messaging, automotive subsystems, cyber security and wireless communications.