By Blake Brittain

(Reuters) -A federal jury in California said on Friday that Apple owes medical-monitoring technology company Masimo $634 million for infringing a patent covering blood-oxygen reading technology.

The jury agreed with Masimo that the Apple Watch’s workout mode and heart rate notification features violated Masimo’s patent rights, a Masimo spokesperson confirmed.

An Apple spokesperson said that the company disagrees with the verdict and will appeal. Masimo, in a statement, called the verdict “a significant win in our ongoing efforts to protect our innovations and intellectual property.”

The California lawsuit is one branch of a contentious, multi-front patent fight between Apple and Irvine, California-based Masimo, which has accused Apple of hiring away its employees and

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