Plaintiff
9 cases as plaintiff.
Birchtech Corp., formerly known as Midwest Energy Emissions Corp. until its rebranding in October 2024, is an environmental technology company headquartered in Corsicana, Texas. Founded in 2008, the company is publicly traded on the TSX, OTCQB, and NYSE American under the ticker symbol BCHT. Birchtech Corp. is a relatively small enterprise, reporting approximately 10-20 employees and annual revenue in the range of $15-20 million as of late 2025 to early 2026.
The company specializes in specialty activated carbon technologies for air and water purification. Its primary offerings include patented SEA® sorbent technologies for mercury emissions capture in the coal-fired utility sector, recognized as a "Best Available Control Technology." Birchtech is also actively developing disruptive water purification technologies focused on the removal of "forever chemicals" such as PFAS and PFOS from potable water.
Birchtech Corp. is an operating company that actively enforces its intellectual property rights. Its litigation posture reflects a company defending its patented technologies while also asserting them against alleged infringers. With one plaintiff case and four defendant cases in the tracked data, Birchtech frequently acts as a patent owner initiating infringement lawsuits against utilities and other entities, while also defending the validity of its patents at the Patent Trial and Appeal Board (PTAB).
Notably, Birchtech Corp. was awarded an approximately $78 million final judgment in December 2025 following a patent infringement lawsuit initiated in 2019 against 43 defendants, including several major power utilities. The case "CERT Operations II LLC et al. v. Birchtech Corp." on the Court of Appeals for the Federal Circuit, dated January 2026, represents an appeal related to this significant judgment. Birchtech's plaintiff case, "Midwest Energy Emissions Corp. et al. v. Berkshire Hathaway Energy Company et al." in the Southern District of Iowa, stems from lawsuits filed in July 2024. The PTAB cases, "Wisconsin Power & Light Co. et al. v. Birchtech Corp.," "Unknown Petitioner v. Birchtech Corp.," and "Union Electric Co. v. Birchtech Corp.," indicate challenges to Birchtech's patents by third parties. The company utilizes these patent enforcement actions to secure licensing agreements within the industry.
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Midwest Energy Emissions Corp. and Birchtech Corp. sued Evergy Kansas Central, Inc., asserting US Patent 10668430. The case was consolidated with MDL No. 3132 and terminated on September 24, 2025, via an Order of Dismissal filed in the related MDL.
Midwest Energy Emissions Corp. and Birchtech Corp. sued Evergy, Inc. and Evergy Kansas Central, Inc., asserting US Patent 10668430. The case experienced multiple transfers and partial dismissals, with claims against Evergy Kansas Central, Inc. ultimately consolidated into MDL No. 3132 and the case terminating on September 24, 2025.
A patent infringement suit by Midwest Energy Emissions Corp. and Birchtech Corp. against Evergy entities, initially filed in the Southern District of Iowa, later transferred and consolidated into a multidistrict litigation.
An infringement suit filed by Birchtech Corp. against Evergy, Inc. et al. concerning US patent 10933370, which was transferred to the U.S. District Court for the Southern District of Iowa, likely as part of the ongoing MDL.
This Multidistrict Litigation consolidates several cases involving US Patent 10668430, initiated by Midwest Energy Emissions Corp. (now Birchtech Corp.) against numerous energy companies. The MDL is open, and various motions have been addressed.
This Multidistrict Litigation centralizes multiple lawsuits alleging infringement of US patent 10933370 by various defendants related to mercury capture technologies, with the centralization order issued on December 12, 2024.
An infringement suit filed by Midwest Energy Emissions Corp. (now Birchtech Corp.) against Ameren Corp. and Union Electric Co., centralized as part of MDL No. 3132 in the Southern District of Iowa on December 12, 2024. US patent 10933370 is asserted.
An infringement suit filed by Midwest Energy Emissions Corp. (now Birchtech Corp.) against multiple defendants, centralized as part of MDL No. 3132 in the Southern District of Iowa on December 12, 2024. US patent 10933370 is asserted.
This multidistrict litigation consolidates several patent infringement lawsuits initially filed in Arizona, Missouri, and Iowa. Some defendants have reached license agreements with Birchtech, and claims against other defendants have been resolved.