• Paul, Weiss, Rifkind, Wharton & Garrison has added Scott Sontag as a partner in its tax department, where he will focus on domestic and international transactions. Sontag joins from Weil, Gotshal & Manges, where he served as co-head of the firm’s global tax practice.

• Akin Gump Strauss Hauer & Feld elected to partner Robert James Boller, litigation; Brian Carney, litigation; Ryan Katz, tax; Meredith Lahaie, financial restructuring; and Daniel Paulos, tax.

• Edwards Wildman Palmer has promoted to partner Robert DiUbaldo in the firm’s insurance and reinsurance department. The firm also promoted Jennifer Dereka to of counsel in its intellectual property practice.

• Jenner & Block has elected to partner Tarsha Phillibert, litigation and white collar defense and investigations; and Michael W. Ross, complex commercial litigation and class action.

• Troutman Sanders has elected to partner Justin Boose, energy; and Mamta Shah, employee benefits.

• Farrell Fritz has promoted to partner Joseph La Ferlita, who focuses on estate planning and the administration of estates and trusts. The firm promoted to counsel commercial litigation attorneys Matthew Donovan, Heather Harrison and Michael Schoenberg.

Labor and employment firm Littler Mendelson has elevated to shareholder Trent Sutton in Rochester and Lisa Griffith in Long Island.

• Bingham McCutchen has added derivatives partner Daniel Budofsky in the firm’s investment management practice group. He was a partner at Davis Polk & Wardwell.

• Cohen Clair Lans Greifer & Thorpe has voted family and matrimonial law attorney S. Susan Gross to partner.

• Harris Beach elected to partner Uniondale-based Keith Corbett, litigation, public finance and economic development; Ithaca-based Alyssa Hochberg Fontaine, corporate; Manhattan-based Kelly Jones, life sciences, mass torts and litigation; and Rochester-based James Nonkes, litigation and intellectual property.

• Tarter Krinsky & Drogin had added Nels Lippert as counsel, focusing on trademark and patent counseling and litigation. Lippert was a partner at Wilmer Cutler Pickering Hale and Dorr.

Labor and employment firm Littler Mendelson has elevated to shareholder Trent Sutton in Rochester and Lisa Griffith in Long Island.