(March 9, 2018, 1:02 PM EST) -- LOS ANGELES — Touting its status as an “innovator in the field of mobile communications,” BlackBerry Ltd. filed a complaint in California federal court March 6 against Facebook Inc., WhatsApp Inc. and Instagram Inc., alleging infringement of seven of its patents by the firms’ respective messaging apps (BlackBerry Ltd. v. Facebook Inc., et al., No. 2:18-cv-01844, C.D. Calif.)....