The US International Trade Commission invalidated a trio of patents covering polycrystalline diamond products used to make drill bits and bearings, lifting a cloud over foreign imports of products used in oil and gas drilling.

The ITC built upon a March ruling that found a host of importers hadn’t violated ChampionX’s US Synthetic patents because they were ineligible for protection, affirming on Monday that the patents covered abstract ideas. Sintered Saw Blade

In late December 2020, the commission agreed to hear Utah-based US Synthetic Corp.'s underlying complaint, which alleges that more than two dozen companies—including China-based SF Diamond, South Korea-based Iljin Diamond, ...

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