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Downing Wellhead Presses to Revive Fracking Patent Battle After PTAB Victory Downing originally filed the patent suit in the U.S. District Court for the Western District of Texas in early 2023, accusing IWS of infringing these patents through the sale and deployment of similar hydraulic fractu... Read the full IIPLA article: https://iipla.org/news/downing-fracking-patent-suit-reopened