Iván Sefer

For more information, please visit www.gibsondunn.com/lawyer/thomas-jeffrey-t/ .

Michael Sansbury has represented clients in trial and appellate courts across the United States. He has argued in courts ranging from Oregon Circuit Court to the U.S. Court of Appeals for the Eleventh Circuit. He has examined countless witnesses—from the president of a multi-national corporation in Minneapolis, Minnesota, to a newspaper publisher from Auburn, Alabama—and has tried issues in state and federal courts in Alabama. Always thinking of the long-term impact, Sansbury spec...

Leah Keele is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Insurance and Workers' Compensation Law - Employers. Leah practices law in Tulsa, Oklahoma Best Lawyers has recognized Leah Keele since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Leah Keele is held by other lawyers.

Charlie Frazier’s successful argument before the Supreme Court of the United States is just one highlight in a distinguished appellate practice in both federal and state courts. For over 32 years, Charlie has assisted trial lawyers with legal strategy and handled appeals in variety of matters, including complex commercial disputes, insurance-related issues, and professional-malpractice claims. Charlie has argued many cases before the United States Court of Appeals for the Fifth Circuit ...

Charlene Koonce is a seasoned trial and appellate attorney who prosecutes and defends commercial disputes on behalf of large and small clients. Ms. Koonce has obtained favorable results through bench and jury trials, summary judgment, and settlement in cases involving complex contract disputes, unfair business practices, and securities fraud. Additionally, she has secured success in matters regarding professional liability and fiduciary duties, breach of warranty, the TCPA, fraud, and fraudul...

Connie is a Fellow in the American College of Trial Lawyers and is currently serving as the President of the Iowa Academy of Trial Lawyers. In addition to healthcare litigation trials, she frequently appears before the Iowa Board of Medicine, the Iowa Department of Inspections and Appeals and the Office of Inspector General on issues related to licensing, EMTALA, HIPAA, Medicare/Medicaid Fraud and Abuse. She has also represented both facilities and professionals on issues of credentialing and...

Ross Antonacci is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Finance Law , Equipment Finance Law, Project Finance Law and Securitization and Structured Finance Law. Ross, who practices law in Wilmington, Delaware, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey and reflects the high esteem in which Ross is held by other top lawyers in the same geographic and legal practice area.

Walt Robertson is a member of the Business & Corporate Services Group. He represents clients in all matters of business including commercial lending, mergers and acquisitions, corporate finance, securities regulation and equine law. Walt has a lifetime of experience in multiple breeds of the equine industry. Prior to practicing law, he worked as a bloodstock agent for a leading commercial agency specializing in the sale of Thoroughbred horses at public auction and as a bid spotter and ann...

Kripa Upadhyay is a lawyer recognized by Best Lawyers in the practice area of Immigration Law. Kripa practices law in Seattle, Washington Best Lawyers has recognized Kripa Upadhyay since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Kripa Upadhyay is held by other lawyers.

Shubi Arora is a partner in the Houston and Austin offices of Kirkland & Ellis LLP. His practice focuses on M&A transactions, private equity investments and special situations strategies, with a particular focus on the energy and infrastructure sectors. His experience spans the traditional energy sector and includes upstream, midstream and power transactions. He also frequently advises clients on energy technology and transition matters, including renewables, energy storage and carbon...