costs as general and administrative costs in the statements of operations as incurred. To date, we have reimbursed patent costs expenses to Brown University in the amount of $180,123.
The contract term for each of the Brown License Agreements and amendments continues until the later of the date on which the last valid claim expires or ten years. Either party may terminate each of the Brown License Agreements in certain situations, including Elkurt being able to terminate the Brown License Agreements at any time and for any reason after April 1, 2022 if we have not raised at least $10 million in equity financing by then. For the oncology programs, three of the license agreements have been sublicensed to our subsidiary, Ocean Chitorx, Inc., and for the Fibrosis program, one license agreement has been sublicensed to our subsidiary, Ocean Chitofibrorx, Inc.
Elkurt/Rhode Island Agreement
On January 25, 2021, we entered into an Exclusive License Agreement, or the Rhode Island License Agreement, with Elkurt, Inc., or Elkurt, a licensee of Rhode Island Hospital. On April 1, 2021 and September 10, 2021, we and Elkurt amended the Rhode Island License Agreement. Under the Rhode Island License Agreement, as amended, Elkurt grants us an exclusive, royalty-bearing license to patent rights and a nonexclusive, royalty-bearing license to know-how, solely to make, have made, market, offer for sale, use, and sell licensed products for use in a certain field.
For the Rhode Island License Agreement, we are required to pay Elkurt $110,000, due within 45 days of an equity financing of at least $10 million or May 1, 2022, whichever comes first, and an additional $3,000 annual maintenance fee thereafter, until January 1, 2028, at which point the annual maintenance fee will become $4,000 per year. We are also required to pay Elkurt 1.5% of net sales under the Rhode Island License Agreement. In addition, we must pay Elkurt 25% of all non-royalty sublicense income prior to the first commercial sale, and 10% of non-royalty sublicense income thereafter, in the event that we enter into sublicenses for the subject intellectual property. If net sales or non-royalty sublicense income are generated from know-how products, the amounts otherwise due (royalty or non-royalty sublicense income) shall be reduced by 50%. We will also pay Elkurt developmental and commercialization milestone payments under the Rhode Island Agreement, ranging from $50,000 for the filing of an IND, or the equivalent outside of the United States, to $250,000 for enrollment of the first patient in a Phase 3 clinical trial in the United States or the equivalent outside of the United States. To date, we have total reimbursed patent costs expenses to Rhode Island Hospital in the amount of $26,685.
The contract term for the Rhode Island License Agreement began February 1, 2020 and will continue until the later of the date on which the last valid claim expires or fifteen years. Either party may terminate the License Agreement in certain situations, including Elkurt being able to terminate the license agreement at any time and for any reason by May 1, 2022, if we have not raised at least $10 million in equity financing by then. Currently, the Rhode Island License Agreement is still in effect and the license agreement has been sublicensed to our subsidiary, Ocean Sihoma, Inc.
Teton Therapeutics, Inc.
On April 15, 2020, we entered into an Exclusive License Agreement, or the Teton License Agreement, with Teton Therapeutics, Inc., or Teton. We amended and restated this agreement on February 25, 2021 in order to assign the program to our subsidiary in the future. Pursuant to the Teton License Agreement, we obtained an exclusive license under certain patent rights, or the Teton Patents, and under certain data, expression and purification methods, information and other know-how, or the Teton Know-How, in each case relating to therapies for neurofibromatosis type 1 and 2 and schwannomatosis. We have the right to make, have made, market, offer for sale, use and sell in the field of therapeutics for each of neurofibromatosis type 1 and 2 and schwannomatosis on a worldwide basis any products or services that are either covered by the Teton Patents or incorporates or otherwise utilizes any Teton Know-How, or any materials that are sold in conjunction with any such products or services, in each such case, a Teton Product. We intend to form a subsidiary that will house this program, or the Ocean Teton Subsidiary.
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