Diego Garcia has advised and represented insurers in numerous types of coverage disputes, including litigation involving environmental, construction defect, product liability, directors and officers insurance coverage, and coverage issues in asbestos and silica cases.

He led the pre-litigation investigation involving a massive environmental coverage claim by a major oil refiner and distributor. As a result of the investigation, the case settled on favorable terms for insurer client. Diego assisted in the briefing of the insurance coverage issues for the Phase II trial in Exxon Corp. v. INA, et al., one of the largest environmental coverage cases in U.S. The case settled on favorable terms for insurer client.

Diego is recognized as a leading attorney in Chambers and Partner's as a Leading Lawyer in America for Insurance.

• United States Fire Ins. Co. v. Scottsdale Ins. Co., 264 S.W.3d 160 (Tex. App. – Dallas 2008) – Represented appellant in complex insurance coverage case involving dispute between primary insurer and excess insurer concerning exhaustion of policy limits.
• Assisted insurance carriers in coverage opinions for insurer client involving construction defect litigation, environmental pollution litigation, toxic tort litigation, product liability litigation, personal injury litigation, employment wrongful act claims, and director and officer wrongful acts claims arising in numerous jurisdictions across the United States.

• Member, State Bar of Texas
• Member, Houston Bar Association
• Member, American Bar Association
• Delegate, Republican National Convention (2008)
• Delegate, Republican Party of Texas Convention (2004, 2006, 2008)
• Member, National Rifle Association (2008 – present)
• Member, Second Baptist Church (2005 – present)
• Member of the Environmental Insurance Subcommittee of the ABA Section of Litigation Insurance Coverage Litigation Committee.

• Moderator on "Misrepresentation, Fraud, and Other Extra-Contractual Claims on April 1, 2010 for the Texas Insurance and Tort Law Update 2010, Thompson Coe Houston Seminar
• Co-Presenter on “The Insured is Under Investigation: What Should I Do?” on March 7, 2009 for the ABA Section of Litigation Insurance Coverage Litigation Committee’s CLE Seminar in Tucson, Arizona
• Co-Presenter on “Expert Witnesses in Complex Environmental Coverage Litigation: Airports, Aquifers and Algorithms” on March 3, 2007 for the ABA Section of Litigation Insurance Coverage Litigation Committee’s CLE Seminar in Tucson, Arizona
  

• Chambers USA, Top Insurance Firm, Texas (2005-2008)
• Chambers and Partner's Leading Lawyers in America for Insurance in Texas (2003-2010)
• Best Lawyers in America® for 2010 in Insurance Law