O’Melveny Worldwide

O’Melveny Honored as Leading Law Firm; Earns Top Rankings in Chambers USA 2019

April 25, 2019


LOS ANGELES—April 25, 2019—O’Melveny has been recognized as one of the nation’s leading law firms, earning top marks in the prestigious Chambers USA: America’s Leading Lawyers for Business 2019 guide.

More than 30 of O’Melveny’s practice areas were recognized by Chambers, with the firm earning Chambers’ highest ranking—Band 1—in the category of nationwide ERISA Litigation.

Chambers also recognized 51 individual O’Melveny lawyers. These elite attorneys earned 62 rankings across four jurisdictions. Ten earned Band 1 status, including five who were ranked nationally in their practice area.

The O’Melveny lawyers in the Band 1 tier include:

  • Seth Aronson: Litigation (California)
  • Robert Blashek: Tax (California)
  • Daniel Bookin: Litigation (California)
  • Brian Boyle: ERISA Litigation (Nationwide)
  • Richard Goetz: Insurance (California)
  • Theodore Kassinger: International Trade (Nationwide)
  • Greta Lichtenbaum: International Trade (Nationwide)
  • Daniel Petrocelli: Litigation and Media & Entertainment (Nationwide, California)
  • Eric Rothenberg: Environmental (New York)
  • Michael Tubach: Antitrust (Nationwide)

The guide also named O’Melveny partner Walter Dellinger one of its “senior statespeople,” a special ranking given to lawyers with exceptional recommendations in their field. Dellinger was recognized for his contributions to Appellate Law (Nationwide). In addition, Dan Petrocelli was selected as a “star individual” for his litigation work.

“We are gratified by our 2019 Chambers rankings,” said Bradley J. Butwin, chair of O’Melveny. “These results speak directly to our dedication to legal excellence and client service.”

Highlights of O’Melveny’s practice achievements include:

Practice Area Rankings (Band 1 & Band 2):


  • Antitrust (Band 2)
  • Litigation: Securities (Band 2)
  • Litigation: White Collar Crime & Investigations (Band 2)
  • Media & Entertainment: Litigation (Band 2)
  • Media & Entertainment: Transactional (Band 2)

USA - Nationwide:

  • Antitrust: Cartel (Band 2)
  • ERISA Litigation (Band 1)
  • Insurance: Dispute Resolution: Insurer (Band 2)
  • Projects: PPP (Band 2)


Ranked Lawyers (Band 1 & Band 2):



  • Kenneth R. O'Rourke (Band 2)
  • Michael Tubach (Band 2)

Antirust: Cartel


  • Michael Tubach (Band 1)

Appellate Law


  • Walter Dellinger (Senior Statespeople)


District of Columbia:

  • Peter Friedman (Band 2)

Environmental: Mainly Transactional

New York:

  • Eric Rothenberg (Band 1)

ERISA Litigation


  • Brian Boyle (Band 1)

Insurance: Dispute Resolution: Insurer

New York and USA-Nationwide:

  • Tancred Schiavoni (Band 2)

Insurance: Insurer


  • Richard Goetz (Band 1)

International Trade: CFIUS Experts


  • Theodore Kassinger (Band 1)

International Trade: Expert Controls & Economic Sanctions


  • Greta Lichtenbaum (Band 1)

IT & Outsourcing: Transactions


  • Heather Meeker (Band 2)

Labor & Employment


  • Apalla Chopra (Band 2)

Litigation: General Commercial


  • Daniel Petrocelli (Star Individuals)

Litigation: Securities


  • Seth Aronson (Band 1)

New York:

  • Jonathan Rosenberg (Band 2)

Litigation: Trial Lawyers


  • Daniel Petrocelli (Band 1)

Litigation: White-Collar Crime & Government Investigations


  • Daniel Bookin (Band 1)
  • Steven J. Olson (Band 2)

New York:

  • Howard Heiss (Band 2)

Media & Entertainment: Litigation


  • Daniel Petrocelli (Band 1)

Media & Entertainment: Transactional


  • Matthew Erramouspe (Band 2)

Projects: PPP


  • Junaid H. Chida (Band 2)

Securities: Regulation: Advisory


  • Rob Plesnarski (Band 2)


Southern California:

  • Robert D. Blashek (Band 1)

About O’Melveny

It’s more than what you do: it’s how you do it. Across sectors and borders, in board rooms and courtrooms, we measure our success by yours. And in our interactions, we commit to making your O’Melveny experience as satisfying as the outcomes we help you achieve. Our greatest accomplishment is ensuring that you never have to choose between premier lawyering and exceptional service. So, tell us. What do you want to achieve? Visit us at omm.com.


Christopher Rieck
O’Melveny & Myers LLP
+1 212 326 2218