Pierce & O’Neill, LLP has been named
a Tier 1 firm in Houston for Commercial Litigation and Oil & Gas Law by
U.S. News - Best Lawyers® “Best Law Firms” in 2015.

Pierce & O’Neill, LLP has been
recognized as one of the nation’s top
law firms by U.S. News – Best
Lawyers and a “Go-To Law Firm”
by in-house law departments at
Fortune 500® companies for its
work in litigation.

Pierce & O’Neill, LLP was selected
by Global Law Experts, a premier
guide to leading lawyers around the
world, as the Energy & Natural
Resources Law Firm of the Year in
Texas for 2014.

Pierce & O’Neill, LLP has been
recognized by its peers as one of the
nation’s top law firms.

Corporate INTL Magazine names Pierce & O’Neill, LLP as its choice for Energy
& Natural Resources Litigation Law Firm
of the Year in Texas for 2013.

Jesse Pierce and Jack O’Neill have
both been selected for inclusion in
Texas Super Lawyers® since its
inception in 2003.

Jesse Pierce has been ranked as a
leading attorney for Energy and
Natural Resources Litigation by
Chambers USA since 2009.


Pierce & O'Neill is frequently retained by Fortune 500 companies to handle their most significant civil litigation matters. Our clients consist of major companies of all types and in many different industries, including sophisticated energy companies, private corporations, local businesses and individuals. Our clients come from Texas, the United States and from abroad, and we handle matters nationwide.

Jesse Pierce and Jack O'Neill each has more than 38 years of courtroom experience trying cases and handling appeals. Although most often retained at the outset of a matter, the firm is frequently asked to substitute as trial counsel before trial, or to step in as appellate counsel on appeal. The firm is widely regarded by clients and peers alike as a "Go-To Law Firm" for high stakes, complex business and energy litigation.


Pierce & O'Neill is a litigation "boutique" with a single focus-the devoted representation of clients in significant litigation. There are major differences between litigators who engage primarily in motion practice and those who try cases. We are a firm of trial lawyers.

Our reputation has been built upon results that exceed expectations and our responsive, innovative and common-sense advice. The relentless pursuit of our clients' interests fosters a spirit of cooperation and partnership. We undertake substantial matters for new and existing clients on a regular basis and value our long-standing relationships with many clients which span several decades.

The firm's practice areas include, among others, commercial litigation, oil and gas law, and natural resources litigation. In each of these areas, the firm has achieved recognition at the highest levels.

Practice Areas
  • Complex Commercial
  • Energy & Natural
    Resources Litigation
  • Appellate Litigation
  • Environmental &
    Toxic Tort Litigation
  • Trade Secret &
    Non-Compete Litigation
  • Trademark Litigation
  • Alternative Dispute
  • Personal Injury Defense
  • Bankruptcy Litigation