Gregory J. Casas: Lawyer with Greenberg Traurig, LLP

Gregory J. Casas

Houston,  TX  U.S.A.

Peer Rating
AV® Preeminent

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Practice Areas

  • Litigation
  • Antitrust & Trade Regulation
  • Climate Change
  • Carbon Credits
  • Global Energy & Infrastructure
  • Life Sciences & Medical Technology
Contact InfoTelephone: 713.374.3500
Fax: 713.374.3505
University Boston University, B.A., English/Economics, magna cum laude, 1990
Law SchoolDuke University School of Law, J.D., 1993
Admitted1993, Texas; 1997, District of Columbia; U.S. Court of Appeals for the Fifth Circuit; U.S. Court of Appeals for the First Circuit; U.S. Court of Appeals for the Third Circuit; U.S. Court of International Trade; U.S. District Court for the District of Columbia; U.S. District Court for the Eastern District of Texas; U.S. District Court for the Southern District of Texas; U.S. District Court for the Western District of Texas
Memberships U.S./Mexico Bar Association (U.S. Co-Chair, Energy Committee); State Bar of Texas; District of Columbia Bar; American Bar Association (Member, Antitrust Section); Houston Bar Association.
LanguagesSpanish, Conversational
BornJersey City, New Jersey, 1969

Greg Casas focuses his practice in antitrust, complex business litigation, and energy and natural resources law. Greg's antitrust practice is international in scope, and includes litigating price-fixing, bid-rigging, market allocation claims and providing counseling for DOJ/FTC investigations, joint venture formation, mergers and acquisitions, pricing plans and other contractual relationships. Greg's complex business litigation experience includes international dispute resolution, arbitration and class action litigation. Greg has counseled numerous clients, both in the United States and internationally, with regard to Hart-Scott-Rodino filings and related Second Requests. His energy experience includes litigating power plant disputes, disputes arising out of oil and gas leases and joint operating agreements, issues related to pipeline transmission disputes, product liability claims relating to oil field tools and supplies, and personal injury and death cases unique to the oil and gas industry. Greg has also litigated patent infringement cases in the Eastern District of Texas -patent infringement-oriented "Rocket Docket."

Areas of Concentration

· Antitrust and trade regulation

· Class action defense

· Commercial

· Intellectual property litigation

· International

· Energy and natural resources

Professional & Community Involvement

· Board Member, U.S./Mexico Bar Association
- U.S. Co-Chair, Energy Committee

· Member, American Bar Association, Antitrust Section

· Member, District of Columbia Bar

· Member, Houston Bar Association

· Member, State Bar of Texas

Awards & Recognition

· Listed, Super Lawyers magazine, Texas Super Lawyers, 2010-2013

· Listed, Chambers USA Guide, 2012

· Rated, AV® Preeminent™ 5.0 out of 5

Professional Experience

Significant Representations

· Represented one of the largest cloud storage providers in a patent infringement matter in the Eastern District of Texas. Claim involved the alleged infringement of internet advertisement methods related to streaming of advertisements from ad optimizers onto a user's home screen.

· Represented industry leader in web-based voice messaging in patent infringement suit in the Eastern District of Texas, brought by a competitor. Claim involved the alleged infringement of the method by which originating calls were masked and the phone numbers were replaced by local exchange numbers.

· Represented medical equipment rental company in antitrust action in East Texas. Claims involved monopolization, restraint of trade and common law conspiracy.

· Represented agency of eastern European country in MDL proceedings involving antitrust claims related to sale of certain commodities; claims included allegations of supply manipulation in order to artificially inflate and maintain prices worldwide.

· Represented Chinese-based designer and fabricator of semiconductors in claims against competitors related to financing and building a new fabrication plant in China. Claims included tortious interference, business disparagement, theft of trade-secrets and civil conspiracy. Defendants were located in China and Japan.

· Provided counseling and represented domestic and international clients regarding Hart-Scott-Rodino filings and related Second Requests before the U.S. Department of Justice and Federal Trade Commissions. Industries involved included agriculture, gasoline, natural gas, transmission, gasoline and crude oil transmission and refining, health care, hotels, and financial services.

· Represented Caribbean oil and gas producer in arbitration before the International Code Counsel (ICC) regarding the purchase of offshore leases.

· Obtained a multimillion-dollar unanimous jury verdict plus interest and attorneys' fees on behalf of client after six days of trial in federal court in Houston. Client brought the case against one of its former distributors seeking payment for product the distributor had already sold. The case involved more than 500 exhibits and complex accounting issues.

· Defended a "super-major" oil and gas company in a class action brought in Latin America by all purchasers of retail gasoline against several of the "super-major" oil companies. The case involved allegations that the oil companies were not providing gravity-adjusted pricing for gasoline sold in hot climates.

· Represented hospital group in Puerto Rico involving antitrust compliance, litigation, mergers and acquisitions, and government contracting.

Publications & Presentations

Articles, Lectures & Publications


· Co-Author, "International Arbitration - Clean Development Mechanism (CDM) Projects," 2008

· Co-Author, Wind Power Article, The ICC UK Official Energy Handbook, 2008

· Co-Author, "The Clean Spark Spread: How Greenhouse Gas Legislation Will Impact the Cost of Producing Power," Electric Light & Power, November/December 2007

· Author, "A Look at U.S. and EU Merger Analysis," February 20, 2004

· Author, "International Arbitration: Issues to Consider When Disputes Arise Abroad," December 10, 2002

· Author, "United States Antidumping Laws: Description of Procedural Process and Strategic Issues," December 7, 2002

· Author, "A Look at Recent Developments in U.S. and EU Merger Analysis: the United States v. Microsoft Settlement and the Road Ahead," June 13, 2002


· Speaker, Carbon Capture & Storage Seminar, Washington, D.C., 2010

· Speaker, Carbon Markets in North America Conference, Miami, FL, January 2009

· Presenter, Met Coke World Summit, Chicago, IL, October 2008

· Speaker, The Eurocoke Summit, Prague, Czech Republic, April 2008

· Speaker, Emerging Opportunities in Carbon Markets Conference, January 2008

· Presenter, "Hospital Mergers Under Antitrust Attack," Strafford Publications CLE Teleconference, January 2006

· Presenter, "Avoiding The Pitfalls of Gun-Jumping in Mergers and Acquisitions," Strafford Publications CLE Teleconference, May 2006

· Presenter, "The Antitrust Enforcement on U.S. Entities: The Aftermath of GE - Haywood," Strafford Publications CLE Teleconference, March 2006

· Speaker, "IQPC: Contract Risk Management Seminar," July 19, 2004

 (Also at Austin Office)


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Second Circuit Reinforces Tough Predatory Pricing Pleading Standards—Can Anyone Properly Plead a Predatory Pricing Claim?
Gregory J. Casas, March 3, 2014
The Supreme Court made it clear in its well-known Twombly decision in 2007 that “liberal pleading requirements of the Federal Rules do not negate the need to plead sufficient facts so that each element of an alleged antitrust violation can be identified.” “Factual allegations...

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Office Information

Gregory J. Casas

1000 Louisiana, Suite 1700
HoustonTX 77002


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