Apple has been sued by Bell Northern Research (BNR) for patent infringement. Bell-Northern Research (BNR) was a telecommunications research and development company established in 1971 when Bell Canada and Northern Electric combined their R&D organizations. BNR was absorbed into Nortel Networks when that company changed its name from Northern Telecom in the mid-1990s. The company has rich history in the telecommunications sector that is further detailed in their formal complaint before the court.

The complaint claims that Apple's iPhones, iPads, MacBooks, iMacs, Mac Pros, Mac minis, Apple TVs, Apple Watches, and other mobile/computer products infringe on 10 of their patents. The patents cover a wide range of technologies from conserving battery power to 802.11a/g standards in relation to "OFDM" encoding to beamforming feedback. Below is a full list with links to the patents that Apple is accused of infringing.  

10 Counts of Infringement

Bell Northern Research (BNR) claims that Apple is infringing on the following 9 patents that they own by assignment from Agere Systems, Broadcom Corp., LSI Logic and Renesas Mobile Corp. Only one of the 10 patents is an original from BNR.  

8,204,554: "System and method for conserving battery power in a mobile station" (Agere Systems Inc)

7,319,889: "System and method for conserving battery power in a mobile station" (Agere Systems Inc )

RE 48,629: "Backward-compatible long training sequences for wireless communication networks" (Bell Northern Research)

8,416,862: "Efficient feedback of channel information in a closed loop beamforming wireless communication system" (Broadcom Corp)

7,957,450: "Method and system for frame formats for MIMO channel measurement exchange" (Broadcom Corp)

7,564,914: "Method and system for frame formats for MIMO channel measurement exchange" (Broadcom Corp)

6,963,129: "Multi-chip package having a contiguous heat spreader assembly" (LSI Logic)

6,858,930: "Multi chip module" (LSI Logic Corp)

7,039,435: "Proximity regulation system for use with a portable cell phone and a method of operation thereof" (Agere Systems Inc)

8,396,072: "Method and apparatus for channel traffic congestion avoidance in a mobile communication system" (Renesas Mobile Corp, Tokyo, JP)

For more details, read the Plaintiff's full complaint filed with the court in Waco Texas in the SCRIBD document below, courtesy of Patently Apple.

   Bell Northern Research v Apple - Patent Infringement by Jack Purcher on Scribd