Marquis Industrial Company, LLC is an entity involved in the refined coal industry, as indicated by its role in patent litigation. While general web searches may yield information for "Marquis Industrial Services, LLC," a company providing industrial construction and maintenance services such as scaffolding, insulation, and coatings from Angleton, Texas, the entity specifically named in the patent litigation database is distinct. Marquis Industrial Services, LLC was founded in 2010, is privately held, has between 60-100 employees, and generates approximately $5.4 million in annual revenue.
Based on its involvement in patent litigation, Marquis Industrial Company, LLC appears to operate within the refined coal industry. It was a defendant in a case centered on mercury control at coal-fired power plants using bromine-enhanced, or refined, coal.
In terms of patent litigation, Marquis Industrial Company, LLC is an active two-way litigant. It was a defendant in Midwest Energy Emissions Corp. et al. v. CERT Operations II LLC et al., filed in the U.S. District Court for the District of Delaware in 2019. In this case, the plaintiffs alleged infringement of patents covering mercury-capture technology for coal-fired power plants. Marquis Industrial Company, LLC, as part of the "CERT Defendants" group, was found liable for willful infringement, inducing, and contributory infringement, resulting in a $57 million verdict (later increased to approximately $78 million with interest) in favor of Midwest Energy Emissions Corp. More recently, CERT Operations II LLC et al., which includes Marquis Industrial Company, LLC, appeared as a plaintiff in CERT Operations II LLC et al. v. Birchtech Corp., filed in the Court of Appeals for the Federal Circuit in 2026, stemming from the Delaware judgment.