J. Campbell Barker

713.632.8016 | Houston, Texas
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Professional Summary

Cam’s practice focuses on appellate and complex commercial litigation.  Before joining the firm, he was an appellate attorney in the U.S. Department of Justice, where he argued cases in the federal courts of appeals and briefed cases in the U.S. Supreme Court.  Cam also served as a Special Assistant United States Attorney in the Eastern District of Virginia, prosecuting felonies in bench and jury trials.

Cam graduated with highest honors from The University of Texas School of Law, where he was Grand Chancellor and Book Review Editor on the Texas Law Review.  He clerked for Chief Judge John M. Walker, Jr. on the U.S. Court of Appeals for the Second Circuit and Judge William C. Bryson on the U.S. Court of Appeals for the Federal Circuit.

Cam is admitted to practice in the U.S. Supreme Court, the U.S. Courts of Appeals for the First, Second, Fourth, Fifth, Sixth, Seventh, Ninth, and Federal Circuits, the four federal districts in Texas, and all Texas state courts.

Representative Experience

U.S. Supreme Court Cases

  • Nautilus v. Biosig Instruments, Inc. Represented American Intellectual Property Law Association in briefing the standard for properly claiming a patented invention.
  • Horne v. Department of Agriculture. Represented constitutional law scholars in briefing the proper timing and forum for a Takings Clause challenge to an agricultural program.
  • United States v. Jones. Represented the United States in briefing the constitutionality of the warrantless installation and use of a GPS tracking device to monitor the public movements of a suspect’s vehicle.
  • Reynolds v. United States. Represented the United States in briefing a defendant’s standing to challenge sex-offender-registration duties under federal law.
  • Kansas v. Ventris. Represented the United States in briefing the admissibility for impeachment purposes of a defendant’s voluntary statement obtained without a voluntary waiver of the Sixth Amendment right to counsel.
  • Chambers v. United States. Represented the United States in briefing the scope of a federal sentencing-enhancement statute.

Texas Supreme Court Cases

  • TracFone Wireless, Inc. v. Commission on State Emergency Communications.  Represented TracFone in obtaining Texas Supreme Court review and reversal of a state agency’s decision requiring the company to collect monthly 9-1-1 fees intended to be applied only to traditional monthly-billed phone companies.
  • Masterson v. Diocese of Northwest Texas. Represented a church in west Texas in obtaining a landmark ruling from the Texas Supreme Court in a church-property case, the first such ruling by that court since 1909, that Texas applies neutral principals in deciding disputes between church factions seeking control over church property after a doctrinal split.
  • Service Employees International Union Local 5 v. Professional Janitorial Service of Houston, Inc.  Represented SCOTUSblog and other bloggers in filing amicus brief on the test for allowing interlocutory appeals by members of the "print or electronic media."
Professional Honors & Affiliations
  • "Appellate Lawyer of the Week," Texas Lawyer, 2013
  • "Texas Rising Star" in Appellate Litigation, Thomson Reuters, 2013-2014
  • State Bar of Texas Pro Bono College, 2013
  • Member, Amicus Committee, American Intellectual Property Law Association
  • Member, Federal Circuit Bar Association
  • Pegasus Scholar, American Inns of Court, 2011
Presentations & Publications
Education & Professional Background
  • The University of Texas School of Law, J.D., 2005,
    Highest Honors (Grand Chancellor; Book Review Editor, Texas Law Review)
  • Texas A&M University, B.S., Computer/Electrical Engineering, 2002, summa cum laude (Tau Beta Pi, Eta Kappa Nu, Phi Kappa Phi, Dean’s Honor Roll)
  • Law Clerk to The Hon. William C. Bryson, U.S. Court of Appeals, Federal Circuit, 2006-2007
  • Law Clerk to The Hon. John M. Walker, Jr., U.S. Court of Appeals, Second Circuit, 2005-2006
  • Admitted to Practice: Texas, 2005