In September 1997, an American company, RiceTec, was granted U.S. Patent No. 5,663,484 on "basmati rice lines and grains". The patent secures lines of basmati and basmati-like rice and ways of analyzing that rice. RiceTec, owned by Prince Hans-Adam of Liechtenstein, faced international outrage over allegations of biopiracy. It had also caused a brief diplomatic crisis between India and the United States, with India threatening to take the matter to the WTO as a violation of TRIPS, the Agreement on Trade-Related Aspects of Intellectual Property Rights. Both voluntarily and due to review decisions by the United States Patent and Trademark Office, RiceTec lost or withdrew most of the claims of the patent, including, most importantly, the right to call their rice products basmati. A more limited varietal patent was granted to RiceTec in 2001 on claims dealing with three strains of the rice developed by the company.