https://www.theregister.co.uk/2017/11/02/qualcomm_sues_apple/

In its 10-K financial filing on Monday, a day before Apple's fiscal Q4 earnings, chipmaker Qualcomm revealed it has sued Apple yet again, this time for breach of contract.

The lawsuit, filed in a state court in San Diego, California, claims Apple flouted its contractual secrecy obligation by sharing confidential info instead of safeguarding it.