R. Todd Thompson is the Founding Partner of Thompson Thompson & Alcantara.  Mr. Thompson began his career in 1988 with a term as a law clerk for the Honorable Peter C. Siguenza, Jr. of the Superior Court of Guam.  Thereafter, he joined the Guam firm then known as Mair, Mair, Hogan & Spade in 1989, and became a named partner in Mair, Mair, Spade & Thompson in 1992.

Over the past thirty years, Mr. Thompson’s practice has emphasized litigation concerning general tort, contract, commercial, aviation, employment, medical malpractice, insurance, real property, and Constitutional law (Organic Act) disputes.  He has developed a recognized expertise in insurance matters, and has successfully defended against numerous major recreational and hospitality tort claims on behalf of hotels, resorts, airlines and tour companies operating in the region.

Career highlights include successful representation of the plaintiffs in Guam's landmark 2015 marriage equality case, as well as effective representation of the air carrier and its underwriters in the aftermath of the Guam air disaster of 1997, and of successful candidates in the 2006 gubernatorial election dispute case.

Mr. Thompson currently serves as an Administrative Law Judge for the Guam Civil Service Commission.

Mr. Thompson has been recognized as one of the premier legal writers in the region.  Among the important cases he has briefed and argued are the following:

  • Ramiro v. White, 2016 Guam 6 (Affirming judgment that "pay on death" trust instrument was ambiguous and that extrinsic evidence showed POD instruction was effective only with respect to certain subaccounts.) 

  • Aguero v. Calvo, 2015 WL 3573989, Civ. Case No. 15-00009 (D. Guam, Order & Opinion, June 8, 2015) (high profile civil rights case establishing marriage equality in Guam).

  • Maeda Pacific Corp. v. GMP Hawaii, Inc., 2011 Guam 20 (Guam Supreme Court adopts “economic loss doctrine” and holds that it applies so as to bar a prime contractor’s tort claims against architects and engineers in commercial construction projects, even in absence of contractual privity); 

  • Hinkle-Sanchez v.TakeCare Ins. Co., Inc., 2010 WL 5148074 (D. Guam, Dec. 13, 2010) (granting health insurer’s summary judgment motion and dismissing ERISA action alleging ambiguity, estoppel, and claim mishandling regarding plan’s “complications of infancy” limitation); 

  • Macris v. Guam Mem. Hosp. Authority, 2008 Guam 6 (reversing judgment against public hospital and administrator because undisclosed client lacked standing to sue for denial of freedom of information request); 

  • Underwood v. Guam Election Commission (Camacho), 2006 Guam 17, cert. denied, 550 U.S. 957, 127 S. Ct. 2431, 167 L. Ed. 2d 1130 (2007) (on briefs) (rejecting gubernatorial election challenge based on interpretation of “majority of votes cast” as used in Guam Organic Act); 

  • Attorney General of Guam v. Torres, 419 F.3d 1017 (9th Cir. 2005) (affirming right of Guam government agencies to retain private counsel under Guam Organic Act); 

  • Bank of Saipan, Inc. v. Atalig, 2005 MP 03 (reversing trial court’s discharge and indemnification of bank receiver prior to adjudicating adverse claims). 

  • Amerault v. Intelcom Support Servs., Inc., 2004 Guam 23 (affirming dismissal of workers’ compensation claimant’s insurer “bad faith” claim based on exclusivity of remedies); 

  • Government of Guam v. PacifiCare Health Ins. Co. of Micronesia, Inc., 2004 Guam 17, cert. denied 544 U.S. 975, 125 S. Ct. 1844; 161 L. Ed. 2d 726 (2005) (reversing trial court’s vacatur of arbitral award permitting health insurer to terminate employee health-insurance contract); 

  • Yasuda Fire & Marine Ins. Co., Ltd., v. Heights Enterprises, 1998 Guam 5 (on briefs) (affirming judgment in favor of liability insurer in coverage dispute over policy’s professional services exclusion); 

  • Camacho v. Du Sung Corp., 121 F.3d 1315 (9th Cir. 1997) (affirming dismissal of injured tort victim’s premises liability suit against commercial landlord). 

Mr. Thompson has organized and presented at numerous public education seminars, including presentations to the Guam Bar and Judiciary. Since 2004, he has also been a regular legal contributor to the Marianas Business Journal.

Mr. Thompson was formerly a member and Chairman of the Board of Trustees of the Guam Educational Radio Foundation (KPRG-FM 89.3 Public Radio Guam) (1997-2007). He is certified to act as a civil case mediator by the Guam judiciary and has successfully mediated major civil disputes.


San Diego, California



  • Guam
  • U.S. District Court of Guam
  • Northern Mariana Islands
  • U.S. District Court of the Northern Mariana Islands
  • California
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. Supreme Court


  • University of California, San Diego (B.A., 1984)
  • University of California, Hastings College of the Law (J.D., 1988)


  • Guam, Northern Mariana Islands and American Bar Associations
  • State Bar of California