Plaintiffs in this antitrust suit are a group of hospitals and other health care providers that purchased pulse oximetry sensors from Tyco Healthcare Group LP after November 2003. They allege that they overpaid for the sensors because Tyco used two kinds of marketing agreements to foreclose competition from generic sensor manufacturers in violation of Section 1 of the Sherman Act, 15 U.S.C. § 1. They also allege that by introducing OxiMax, a patented pulse oximetry system that is incompatible with generic sensors, Tyco unlawfully maintained its monopoly over the sensor market in violation of Section 2 of the Sherman Act, 15 U.S.C. § 2.
The district court denied Plaintiffs’ motion for class certification and later granted Tyco’s motion for summary judgment on the Section 1 and 2 claims. We agree with the district court that Tyco’s agreements do not violate Section 1; there is no evidence that they foreclosed competition in a substantial share of the sensor market. We also agree that there is no Section 2 violation; the undisputed evidence shows that the patented OxiMax design is an improvement over the previous design. Innovation does not violate the antitrust laws on its own, and there is no evidence that Tyco used its monopoly power to force customers to adopt its new product. Accordingly, we affirm the district court’s judgment on the merits and have no need to reach the class certification issue.
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