Tell us about your top U.S. Supreme Court or federal appeals court victory over the past year and how you and your team achieved the win.

In Kisor v. Wilkie, we asked the Supreme Court to overrule or limit Auer [v. Robbins] deference. After granting our petition, the court unanimously reversed the court of appeals, delivering an unequivocal victory for our client. Although the justices were divided as to whether Auer should be formally overruled, all agreed with our fundamental point that Auer deference—especially in our case—was badly broken and required significant reform. Justice [Neil] Gorsuch said that Auer deference is now a "paper tiger." Kisor will require agencies to act with greater predictability and transparency.

*Arguments for Kisor v. Wilkie occurred prior to Paul Hughes and Michael Kimberly joining McDermott.

How did your firm approach appellate success over the past year?

Our appellate successes are born of teamwork. When a client hires us, we both fully commit to the cause. All of our work reflects our decade-plus of collaboration.

What is the most satisfying element of appellate practice in your opinion?

There is nothing more satisfying than achieving an outright victory that meets our client's immediate need. Better still, securing a win on appeal often means securing lasting legal change.

What's the most valuable lesson you learned as a young lawyer?

Always outwork your opponent. The best appellate lawyers roll up their sleeves to master the details of their cases. Small details can drive the outcome.

Submitted by Paul Hughes and Michael Kimberly, partners at McDermott Will & Emery.