Mazzant had been mentioned as someone that President Donald Trump could nominate to the United States Court of Appeals for the Federal Circuit—his docket as a district court judge has been patent-heavy, and he is a conservative, despite having been nominated by President Obama.[4]
On November 22, 2016, Mazzant issued a nationwide injunction blocking a regulation by President Barack Obama attempting to adjust the maximum salary where overtime is required, which had not been raised in decades.[10]
In 2016, a class action lawsuit was filed against Adeptus Health (as well as members of the Company’s board of directors, Sterling Partners, and the joint book-running managers in the Company’s secondary public offering of shares of its Class A common stock) by purchasers of its securities alleging that the company violated the federal securities laws and made false and/or misleading statements, failing to disclose its internal control over financial reporting and the overall status of its business operations.[11][12] The case is Oklahoma Law Enforcement Retirement System v. Adeptus Health Inc., before Judge Mazzant, and is under Sections 11, 12(a)(2), and 15 of the Securities Act of 1933, as well as Section 10(b) and 20(a) of the Securities Exchange Act of 1934.[13][12]
September 8, 2017, Mazzant granted the NFLPA’s request for a temporary restraining order or preliminary injunction barring the NFL from imposing a six-game suspension on Dallas Cowboys running back Ezekiel Elliott. Mazzant found Elliott had not received a “fundamentally fair arbitration hearing”.[14][15]
In February 2023, Mazzant was assigned Michael Irvin’s case against Marriott. Irvin filed a $100 million defamation lawsuit after Marriott decided not to share video requested by Irvin in his case against a female employee who claimed he was inappropriate with her during Super Bowl LVII week.[16][17]