Ballard Spahr LLP
Founded 1885 in Philadelphia; Tier‑1 AmLaw firm with over 700 attorneys across 18 offices. Strong in real estate, IP, litigation, finance and corporate work.
Morgan, Lewis & Bockius LLP
Philadelphia‑headquartered global law firm (~2,200 attorneys in 31 offices), advising major clients in corporate law, labor, healthcare, energy, IP and more.
Blank Rome LLP
Founded in Philadelphia in 1946; about 750 attorneys across 16 offices, multipractice firm with significant government‑affairs and pro bono activity.
Duane Morris LLP
Philadelphia‑based firm founded 1904, ~800 attorneys, nationally ranked in litigation, bankruptcy, health care, immigration and construction law.
White and Williams LLP
https://www.whiteandwilliams.com/
Established 1899 in Philadelphia, ~225 lawyers; national Tier‑1 recognition in insurance and bankruptcy law, plus general practice areas.
Rawle & Henderson LLP
Founded 1783: the oldest continuously operating law firm in the U.S., headquartered in Philadelphia, renowned for admiralty and maritime law.
Polsinelli LLP (Philadelphia office)
Recently expanded into Philadelphia via significant partner hires from Holland & Knight; growing practice in executive compensation and benefits.
Kirkland & Ellis LLP (new Philadelphia office)
Chicago‑based global legal leader recently launched a Philadelphia office with Skadden partners specializing in commercial litigation and mass torts.