Apple Stole Tech for Watch, Masimo Claims in Patent Suit (2)

Apple Inc. is accused of stealing trade secrets and improperly using Masimo Corp. inventions related to health monitoring in its Apple Watch.

Masimo, which develops signal processing technology for health-care monitors, and its spinoff, Cercacor Laboratories Inc., claim in a lawsuit that Apple got secret information under the guise of a working relationship and then hired away key employees, including Michael O’Reilly, who became vice president of Apple’s health technology efforts.

The business segment that includes the Apple Watch, Apple TV and Beats headphones is the company’s fastest-growing category and generated more than $24 billion in sales in the ...