Defendant

Larkwood Energy, LLC

1 case as defendant.

Also appears as a plaintiff in 1 case View as plaintiff

Company profile

Larkwood Energy, LLC is a private entity that appears to be part of a larger group of companies, referred to in legal documents as "CERT RC Defendants" and "CERT Operations Companies Defendants," involved in the refined coal industry. Specific details regarding its headquarters, founding year, employee count, or revenue are not publicly available.

The company's operations, as indicated by patent litigation, are connected to methods for reducing mercury emissions from coal-fired power plants. These methods involve the use of bromine-enhanced coal (also known as "refined coal") and sorbents like activated carbon. Larkwood Energy, LLC, alongside its associated entities, has been implicated in activities related to the supply or enablement of these mercury control technologies.

Larkwood Energy, LLC exhibits a two-way patent litigation posture. It has appeared as a defendant in at least one significant case, Midwest Energy Emissions Corp. et al. v. CERT Operations II LLC et al. in the U.S. District Court for the District of Delaware, concerning patent infringement related to mercury control technologies. Concurrently, it has also acted as a plaintiff in the case CERT Operations II LLC et al. v. Birchtech Corp. before the Court of Appeals for the Federal Circuit. This dual role indicates active involvement in both defending against and initiating patent disputes.

The most notable case involving Larkwood Energy, LLC is the Midwest Energy Emissions Corp. litigation, where it was among several defendants accused of indirectly and willfully infringing patents related to mercury emission reduction using refined coal. The defense in this case included arguing for an implied license to the asserted patents. This context highlights Larkwood Energy, LLC's association with a network of entities focused on refined coal products and their application in environmental control systems for power generation.

Midwest Energy Emissions Corp. et al. v. CERT Operations II LLC et al.

Judgment; On Appeal
Docket:
1:19-cv-01334
Filed:
2019-07
Patents:10596517

Midwest Energy Emissions Corp. and MES Inc. (later Birchtech Corp.) sued 43 defendants for patent infringement. A jury trial concluded in March 2024 with a $57 million verdict against the remaining CERT Defendants. A final $78 million judgment was issued in December 2025, which has since been appealed.