The following is a summary of intellectual property in the form of issued U.S. patents we
own, or for which we have exclusive licenses, regarding the use of itraconazole, and more specifically SUBA-Itraconazole, as an anti-cancer therapy.
Johns Hopkins University Patent: we currently sublicense from Mayne Pharma International the exclusive U.S. rights to U.S. Patent
8,653,083 (Hedgehog Pathway Antagonists to Treat Disease ), which sublicense covers the use of itraconazole as a treatment for cancer as a Hedgehog Pathway inhibitor. The patent is owned by The Johns Hopkins University and expires on
April 9, 2028.
Mayne Pharma Intellectual Property Licensed to Inhibitor Therapeutics: Four issued patents have been
licensed to us by Mayne Pharma concerning the manufacturing and composition of matter for SUBA-Itraconazole, for which we are implementing clinical and regulatory programs to enable the repurposing of itraconazole to treat cancer. This strategy is
intended to significantly reduce the risk and time to potential FDA approvals for marketing in the United States as evidenced via the clearance by FDA for us to proceed directly into a Phase 2b human trial which we commenced in August 2015 and
agreement by FDA that, based upon the results demonstrated in the Phase 2b trial, we could follow the 505(b)(2) regulatory pathway. The patents that are licensed to us by Mayne Pharma are as follows:
Mayne Pharma U.S. Patent 6,881,745
Pharmaceutical Compositions for Poorly Soluble Drugs
Issued: 04-19-2005; Expires: 12-22-2020
Mayne Pharma U.S. Patent 8,771,739
Pharmaceutical Compositions for Poorly Soluble Drugs
Issued: 07-08-2014; Expires: 12-16-2022
Mayne Pharma U.S. Patent 8,921,374
Itraconazole Compositions and Dosage Forms and Methods Using Same
Issued: 12-30-2014; Expires: 06-21-2033
Mayne Pharma U.S. Patent 9,272,046
Itraconazole Compositions and Dosage Forms and Methods Using Same
Issued: 03-01-2016; Expires: 06-21-2033
Inhibitor Therapeutics Intellectual Property:
We were issued a patent by the U.S. Patent and Trademark Office (or USPTO) on November 24, 2015U.S. Patent 9,129,609, Treatment
and Prognostic Monitoring of Proliferation Disorders Using Hedgehog Pathway Inhibitors, expires 02-05-2034. On May 8, 2018, we were issued a patent by the
USPTO for U.S. Patent 9,962,381, Treatment and Prognostic Monitoring of Cancerous Proliferation Disorders Using Hedgehog Pathway Inhibitors, expires 02-05-2034;
and on May 15, 2018, we were issued a patent by the USPTO for U.S. Patent 9,968,600, Treatment and Prognostic Monitoring of Non-Cancerous Proliferation Disorders Using Hedgehog Pathway Inhibitors,
expires 02-05-2034. On June 25, 2019, we were issued a patent by the USPTO for U.S. Patent 10,328,072, Treatment of Lung Cancer Using Hedgehog Pathway
Inhibitors, expires 02-05-34. On July 30, 2019, we were issued a patent by the USPTO for U.S. Patent 10,363,252, Treatment of Prostate Cancer Using
Hedgehog Pathway Inhibitors, expires 02-05-34.
In
addition, as described above, we have an option to be the exclusive licensee of certain chemical analogues of itraconazole owned by UConn.
We also plan to continue to expand our intellectual property estate and are filing additional patent applications directed to dosage forms,
methods of treatment, therapies for other cancers and additional Hedgehog inhibitor compounds and their derivatives. We will also rely on trade secrets and careful monitoring of our proprietary information to protect aspects of our business that are
not amenable to, or that we do not consider appropriate for, patent protection.
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