Chevron falsely attacked lawyer in $51B climate case, Oregon county says

By Lesley Clark | 10/16/2025 06:13 AM EDT

Multnomah County attorneys defended their lead counsel after Chevron accused him of hiding his role in climate research papers.

A wildfire destroyed areas of Talent, Oregon, in 2020.

A scientific paper about a 2020 Oregon wildfire is at the center of a courtroom dispute in a climate lawsuit brought by Multnomah County. John Locher/AP

An Oregon county that’s suing the oil and gas industry for $51 billion over climate-related damages accused Chevron of making “false and unsubstantiated” claims in its effort to strike two scientific studies about rising temperatures from the court record.

The assertion by lawyers representing Multnomah County came after Chevron asked the Oregon Circuit Court last month to disregard the studies and review whether the research was “supported or otherwise influenced” by the lead attorney for the county’s 2023 lawsuit.

The oil company’s accusation that Roger Worthington, the county’s lawyer, initiated fraud on the court has “no basis in law or in fact,” the county told the court in a brief filed last week.

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It argues that Chevron’s “headline-grabbing accusations” came “at the very moment in time Defendants seek to have legislation enacted granting them immunity from this type of lawsuit.”

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