Mealey's (December 29, 2021, 10:34 AM EST) -- PITTSBURGH — A man who says he has an ownership interest in a hydraulic fracturing valve system that is used by a valve manufacturing company on Nov. 16 filed a brief in Pennsylvania federal court contending that the company’s motion to dismiss his intellectual property case should be denied because he says he has “more than adequately” established the basis for the relief he seeks....