Tisdal & O'Hara, PLLC
13808 Wireless Way, Oklahoma City, OK 73134, Oklahoma City, OK 73134
About Tisdal & O'Hara, PLLC
Tisdal & O'Hara, PLLC is an Oklahoma law firm with offices in Clinton and Oklahoma City. The firm represents clients in personal injury matters, including car, motorcycle, and trucking accidents, and wrongful death claims. Their practice also encompasses energy law, business law, and ad valorem tax litigation, often representing mineral rights and landowners. With over 100 years of combined experience, the firm's attorneys have secured significant recoveries and litigated cases up to the Supreme Court level.
Our Attorneys
Notable Case Results
Case results are sourced directly from attorney websites by Injuria.ai's data infrastructure, which actively monitors 22,000+ personal injury law firms. They are not results obtained by ThatCarHitMe.com. Every case is unique and must be evaluated on its own facts. Prior results do not guarantee a similar outcome. The results shown are not necessarily representative of all results obtained by these firms.
$429M
Ad Valorem Tax Litigation
TISDAL & O'HARA represented the Pittsburg County Assessor in litigation against affiliates of a worldwide energy conglomerate concerning the valuation of a 1250 mw natural gas-fired electric generating plant for ad valorem tax purposes. The firm's representation lead to a judgment that the market value of the plant, known as the Kiamichi Energy Facility, was $429 million. Such valuation resulted in the distribution of millions of dollars of ad valorem tax revenue to area school systems and other facilities dependent on such funds.
$116M
Ad Valorem Tax Litigation
TISDAL & O'HARA represented the Assessors of Custer, Woodward and Washita Counties in litigation against affiliates of a worldwide wind energy company concerning the valuation of 120 wind turbines for ad valorem tax purposes. The firm's representation lead to judgments in the three counties of market values of the wind turbines totaling approximately $116 million. Such valuation resulted in the distribution of substantial ad valorem tax revenue to area school systems and other facilities dependent on such funds.
$25M
Royalty Class Action
Glen D. Sacket v. Great Plains Pipeline Co., et al., Case No. CJ-2002-70, District Court of Woods County, State of Oklahoma (royalty class action settlement for $25 million).
$25M
Royalty Owner Class Action
In the case of Glen D. Sacket v. Great Plains Pipeline Co., et al., Case No. CJ-2002-70, District Court of Woods County, State of Oklahoma, TISDAL & O'HARA were appointed lead counsel and achieved certification of a class of royalty owners asserting claims for unpaid royalties on production from wells hooked to a single gathering system located in Woods, Major and Alfalfa Counties, Oklahoma. The royalty owners asserted claims for improper deductions, affiliate transactions and civil conspiracy. After the court order certifying the case as a class action was affirmed on appeal, the firm's representation resulted in a $25 million settlement, which was distributed to royalty owners in the subject wells.
$18M
Royalty Owner Settlement
TISDAL & O'HARA recovered $18 million in unpaid royalties plus interest for a royalty owner with interests in oil & gas wells across the state.
$12.7M
Royalty Owner Class Action
In the case of Carmikael Dodson v. Phillips Petroleum Co., et al., Case No. CJ-2004-0019, District Court of Beckham County, State of Oklahoma, TISDAL & O'HARA were appointed lead counsel and achieved certification of a class of royalty owners asserting claims for unpaid royalties on the sale of oil produced from wells in Beckham and Greer Counties, Oklahoma. After the court order certifying the case as a class action was affirmed on appeal, the firm's representation resulted in a $12.7 million settlement, which was distributed to royalty owners, local schools and local charities.