Apple Loses First Round of Masimo Bid to Ban Watch Imports (2)

Certain models of the Apple Watch infringe one of five Masimo Corp. patents related to using light sensors to measure the amount of oxygen in the blood, a US International Trade Commission judge found in the first round of Masimo’s bid to block imports of Apple Inc.'s popular smartwatch.

The ITC had postponed the decision three times before Judge Monica Bhattacharyya issued her initial determination, announced in a notice Tuesday.

The accused products infringe at least one claim in each of three patents, the notice says, but most of those were mooted by Bhattacharyya’s findings that the infringed claims were ...