https://www.cnet.com/news/apple-plotted-to-hurt-qualcomm-years-before-it-sued-the-company/

In September 2014, a document from Apple titled "QCOM - Future scenarios" detailed ways the company could exert pressure on Qualcomm, including by working with Intel on 4G modems for the iPhone. Apple and its manufacturing partners didn't actually file suit against Qualcomm until more than two years later. A second page of that document, titled "QCM - Options and recommendations (2/2)" revealed that Apple considered it "beneficial to wait to provoke a patent fight until after the end of 2016," when its contracts with Qualcomm would expire. 

"They were plotting it for two years," Qualcomm attorney Evan Chesler, of the firm Cravath, Swaine & Moore, said during his opening arguments last week. "It was all planned in advance. Every bit of it."