Description of Business and Basis of Presentation	6 Months Ended
Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	NOTE 1 – DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Description of Business Mateon Therapeutics, Inc. (f/k/a OXiGENE, Inc.) ( “Mateon”), was formed in the State of New York in 1988, was reincorporated in the State of Delaware in 1992, and changed its name to Mateon Therapeutics, Inc. in 2016. Mateon conducts business activities through both Mateon and its wholly-owned subsidiaries, Oncotelic, Inc. (“Oncotelic”), a Delaware corporation, and PointR Data, Inc. (“PointR”), a Delaware corporation (Mateon, Oncotelic, and Point R are collectively, the “Company”). Mateon is evaluating the further development of its product candidates OXi4503 as a treatment for acute myeloid leukemia and myelodysplastic syndromes and CA4P in combination with a checkpoint inhibitor for the treatment of advanced metastatic melanoma. In April 2019, Mateon entered into an Agreement and Plan of Merger with Oncotelic, a clinical-stage biopharmaceutical company developing investigational drugs for the treatment of orphan oncology indications and the Mateon’s wholly-owned subsidiary Oncotelic Acquisition Corporation (the “Merger Sub”). Upon the terms of and subject to the satisfaction of the conditions described in the Merger Agreement, the Merger Sub was merged with and into Oncotelic (the “Merger”), with Oncotelic surviving the Merger as a wholly-owned subsidiary of Mateon. Also, in April 2019, Mateon completed the Merger and Oncotelic became a wholly-owned subsidiary of Mateon. The Merger was treated as a recapitalization and reverse acquisition for financial accounting purposes. Oncotelic is considered the acquirer for accounting purposes, and Mateon’s historical financial statements before the Merger have been replaced with the historical financial statements of Oncotelic prior to the Merger in the financial statements and filings with the Securities and Exchange Commission. For more information on the Merger, please refer to Mateon’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 14, 2020. The Company is a cancer immunotherapy company dedicated to the development of first in class self-immunization protocol (SIP™) candidates for difficult to treat cancers. The Company’s proprietary SIP™ candidates offer advantages over other immunotherapies because they do not require extraction of the tumor or isolation of the antigens, and they have the potential for broad-spectrum applicability for multiple cancer types. The Company’s proprietary product candidates have shown promising clinical activity in phase 2 trials for the treatment of gliomas and pancreatic cancers. The Company aims to translate its unique insights, which span more than three decades of original work using RNA therapeutics, into the deployment of antisense as a RNA therapeutic for diseases which are caused by TGF-beta overexpression, starting with cancer and expanding to Duchenne Muscular Dystrophy (DMD) and others. Oncotelic’s lead product candidate, OT-101, is being developed as a broad-spectrum anti-cancer drug that can also be used in combination with other standard cancer therapies to establish an effective multi-modality treatment strategy for difficult-to-treat cancers. Together, the Company plans to initiate phase 3 clinical trials for OT-101 in both high-grade glioma and pancreatic cancer, and any other indications that may evolve. The Company is developing OT-101 for the various epidemics and pandemics, similar to the current corona virus (“COVID-19”) pandemic. In this connection, Mateon entered into an agreement and supplemental agreement with Golden Mountain Partners (“GMP”) for a total of $1.2 million to render services for the development of OT-101. Such amount was recorded as revenue upon completion of all performance obligations under the agreement. Further, In June 2020, Mateon secured $2 million in debt financing, evidenced by a one year convertible note (the “GMP Note”) from GMP, to conduct a clinical trial evaluating OT-101 against COVID-19 bearing 2% annual interest, and is personally guaranteed by Dr. Vuong Trieu, the Chief Executive Officer of Mateon. The GMP Note is convertible into Mateon’s Common Stock upon the GMP Note’s maturity one year from the date of the GMP Note, at Mateon’s Common Stock price on the date of conversion with no discount. GMP does not have the option to convert prior to the GMP Note’s maturity at the end of one year. Such financing will be utilized solely to fund the clinical trial. In addition, the Company was paid $0.5 million for the completion of a successful in-vivo study of OT-101 in combination with Interluken 2 from Autotelic BIO Co., LTD. (“ATB”), an unaffiliated South Korean Company with whom Oncotelic had entered into an agreement in 2018. In August 2019, Mateon entered into an Agreement and Plan of Merger (the “PointR Merger Agreement”) with PointR. PointR survived the merger as a wholly-owned subsidiary of the Company (the “PointR Merger”). The PointR Merger was intended to create a publicly-traded artificial intelligence (“AI”) driven immuno-oncology company with a robust pipeline of first in class TGF-β immunotherapies for late stage cancers such as gliomas, pancreatic cancer and melanoma. In November 2019, Mateon entered into Amendment No. 1 (the “Amendment”) to the PointR Merger Agreement with PointR. The Amendment revised certain terms of the PointR Merger Agreement to provide that holders of PointR Common Stock would receive shares of the Mateon’s Series A Preferred Stock in lieu of shares of Mateon’s Common Stock in connection with the PointR Merger, as originally contemplated by the PointR Merger Agreement. The Amendment also revised the terms of the milestones for earn-out payment. Also in November 2019, pursuant to the terms of the PointR Merger Agreement, Mateon completed the PointR Merger. For more information on the PointR Merger, please refer to Mateon’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 14, 2020. Please review Note 12 – Subsequent events for more information on updates since June 30, 2020. Principles of Consolidation The consolidated financial statements include the accounts of Mateon and its wholly owned subsidiaries, Oncotelic and PointR. Intercompany accounts and transactions have been eliminated in consolidation. Basis of Presentation The accompanying consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission including Form 10-Q and Regulation S-X. The information furnished herein reflects all adjustments (consisting of normal recurring accruals and adjustments) which are, in the opinion of management, necessary to fairly state the operating results for the respective periods. Certain information and footnote disclosures normally present in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) have been omitted pursuant to such rules and regulations. Liquidity and Going Concern The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. The Company has incurred net losses of approximately $16.2 million since inception, had negative working capital of $7.4 million at June 30, 2020, of which approximately $1.3 million is attributable to assumed negative working capital of Mateon and $2.6 million contingent liability of issuance of common shares of Mateon to PointR shareholders upon achievement of certain milestones in accordance with the PointR Merger Agreement, and has mostly had negative cash flows from operations through the six months ended June 30, 2020. These conditions raise substantial doubt about the Company’s ability to continue as a going concern for a period of one year from the date of this filing. Management expects to incur additional losses in the foreseeable future and recognizes the need to raise capital to remain viable. The accompanying consolidated financial statements do not include any adjustments that might be necessary should the Company be unable to continue as a going concern. The Company’s long-term plans include continued development of its current pipeline of products to generate sufficient revenues to cover its anticipated expenses, through either technology transfer or product sales. Until the Company is able to generate sufficient revenues from its current pipeline, the Company plans on funding its operations through the sale of equity and/or the issuance of debt, combined with or without warrants or other equity instruments. Between April 2019 and December 2019, the Company entered into various securities purchase agreements (each individually, a “SPA”, and collectively, the “SPAs”) and notes payable (each individual, a “Note”, and collectively, the “Notes”), including a SPA and two notes payable with the Company’s CEO. In total, the Company raised a gross total of $2 million through such SPAs and Notes. For more details on the SPAs and the Notes, see Note 5 below. In July 2019, the Company entered into a convertible note purchase agreement with PointR. Such convertible note was converted into shares of Mateon upon the completion of the PointR Merger. During the six months ended June 30, 2020, the Company’s CEO provided short term funding of $70,000 to the Company. The Company raised $2.5 million in gross proceeds in July and August 2020 through JH Darbie & Co., Inc. (“JH Darbie”). The Company paid $321,000 as placement fees to JH Darbie. JH Darbie and the Company are parties to a placement agent agreement, dated February 25, 2020 pursuant to which DH Darbie has the right to sell a minimum of 40 Units and a maximum of 100 Units on a best efforts basis. The issuance and sale of the Units on July 23, 2020 and August 7, 2020 represented the first and second tranche of the 2020 Financing. During the six months ended June 30, 2020, the Company recorded a total of approximately $1.7 million in service revenues from GMP and ATB. There are no assurances that the Company would be able to generate revenues for services and/or outlicensing fees in the near future. Although no assurances can be given as to the Company’s ability to deliver on its revenue plans, or that unforeseen expenses may arise, management believes that the potential equity and debt financing or other potential financing will provide the necessary funding for the Company to continue as a going concern. Also, management cannot guarantee any potential debt or equity financing will be available on favorable terms or at all. As such, management does not believe the Company has sufficient cash for 12 months from the date of this report. If adequate funds are not available on acceptable terms, or at all, the Company will need to curtail operations, or cease operations completely.

Description of Business and Basis of Presentation

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Basis of Presentation

NOTE 1 – DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION

Description of Business

Mateon Therapeutics, Inc. (f/k/a OXiGENE, Inc.) ( “Mateon”), was formed in the State of New York in 1988, was reincorporated in the State of Delaware in 1992, and changed its name to Mateon Therapeutics, Inc. in 2016. Mateon conducts business activities through both Mateon and its wholly-owned subsidiaries, Oncotelic, Inc. (“Oncotelic”), a Delaware corporation, and PointR Data, Inc. (“PointR”), a Delaware corporation (Mateon, Oncotelic, and Point R are collectively, the “Company”). Mateon is evaluating the further development of its product candidates OXi4503 as a treatment for acute myeloid leukemia and myelodysplastic syndromes and CA4P in combination with a checkpoint inhibitor for the treatment of advanced metastatic melanoma.

In April 2019, Mateon entered into an Agreement and Plan of Merger with Oncotelic, a clinical-stage biopharmaceutical company developing investigational drugs for the treatment of orphan oncology indications and the Mateon’s wholly-owned subsidiary Oncotelic Acquisition Corporation (the “Merger Sub”). Upon the terms of and subject to the satisfaction of the conditions described in the Merger Agreement, the Merger Sub was merged with and into Oncotelic (the “Merger”), with Oncotelic surviving the Merger as a wholly-owned subsidiary of Mateon. Also, in April 2019, Mateon completed the Merger and Oncotelic became a wholly-owned subsidiary of Mateon. The Merger was treated as a recapitalization and reverse acquisition for financial accounting purposes. Oncotelic is considered the acquirer for accounting purposes, and Mateon’s historical financial statements before the Merger have been replaced with the historical financial statements of Oncotelic prior to the Merger in the financial statements and filings with the Securities and Exchange Commission. For more information on the Merger, please refer to Mateon’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 14, 2020.

The Company is a cancer immunotherapy company dedicated to the development of first in class self-immunization protocol (SIP™) candidates for difficult to treat cancers. The Company’s proprietary SIP™ candidates offer advantages over other immunotherapies because they do not require extraction of the tumor or isolation of the antigens, and they have the potential for broad-spectrum applicability for multiple cancer types. The Company’s proprietary product candidates have shown promising clinical activity in phase 2 trials for the treatment of gliomas and pancreatic cancers. The Company aims to translate its unique insights, which span more than three decades of original work using RNA therapeutics, into the deployment of antisense as a RNA therapeutic for diseases which are caused by TGF-beta overexpression, starting with cancer and expanding to Duchenne Muscular Dystrophy (DMD) and others. Oncotelic’s lead product candidate, OT-101, is being developed as a broad-spectrum anti-cancer drug that can also be used in combination with other standard cancer therapies to establish an effective multi-modality treatment strategy for difficult-to-treat cancers. Together, the Company plans to initiate phase 3 clinical trials for OT-101 in both high-grade glioma and pancreatic cancer, and any other indications that may evolve.

The Company is developing OT-101 for the various epidemics and pandemics, similar to the current corona virus (“COVID-19”) pandemic. In this connection, Mateon entered into an agreement and supplemental agreement with Golden Mountain Partners (“GMP”) for a total of $1.2 million to render services for the development of OT-101. Such amount was recorded as revenue upon completion of all performance obligations under the agreement. Further, In June 2020, Mateon secured $2 million in debt financing, evidenced by a one year convertible note (the “GMP Note”) from GMP, to conduct a clinical trial evaluating OT-101 against COVID-19 bearing 2% annual interest, and is personally guaranteed by Dr. Vuong Trieu, the Chief Executive Officer of Mateon. The GMP Note is convertible into Mateon’s Common Stock upon the GMP Note’s maturity one year from the date of the GMP Note, at Mateon’s Common Stock price on the date of conversion with no discount. GMP does not have the option to convert prior to the GMP Note’s maturity at the end of one year. Such financing will be utilized solely to fund the clinical trial. In addition, the Company was paid $0.5 million for the completion of a successful in-vivo study of OT-101 in combination with Interluken 2 from Autotelic BIO Co., LTD. (“ATB”), an unaffiliated South Korean Company with whom Oncotelic had entered into an agreement in 2018.

In August 2019, Mateon entered into an Agreement and Plan of Merger (the “PointR Merger Agreement”) with PointR. PointR survived the merger as a wholly-owned subsidiary of the Company (the “PointR Merger”). The PointR Merger was intended to create a publicly-traded artificial intelligence (“AI”) driven immuno-oncology company with a robust pipeline of first in class TGF-β immunotherapies for late stage cancers such as gliomas, pancreatic cancer and melanoma. In November 2019, Mateon entered into Amendment No. 1 (the “Amendment”) to the PointR Merger Agreement with PointR. The Amendment revised certain terms of the PointR Merger Agreement to provide that holders of PointR Common Stock would receive shares of the Mateon’s Series A Preferred Stock in lieu of shares of Mateon’s Common Stock in connection with the PointR Merger, as originally contemplated by the PointR Merger Agreement. The Amendment also revised the terms of the milestones for earn-out payment. Also in November 2019, pursuant to the terms of the PointR Merger Agreement, Mateon completed the PointR Merger. For more information on the PointR Merger, please refer to Mateon’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 14, 2020.

Please review Note 12 – Subsequent events for more information on updates since June 30, 2020.

Principles of Consolidation

The consolidated financial statements include the accounts of Mateon and its wholly owned subsidiaries, Oncotelic and PointR. Intercompany accounts and transactions have been eliminated in consolidation.

Basis of Presentation

The accompanying consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission including Form 10-Q and Regulation S-X. The information furnished herein reflects all adjustments (consisting of normal recurring accruals and adjustments) which are, in the opinion of management, necessary to fairly state the operating results for the respective periods. Certain information and footnote disclosures normally present in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) have been omitted pursuant to such rules and regulations.

Liquidity and Going Concern

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. The Company has incurred net losses of approximately $16.2 million since inception, had negative working capital of $7.4 million at June 30, 2020, of which approximately $1.3 million is attributable to assumed negative working capital of Mateon and $2.6 million contingent liability of issuance of common shares of Mateon to PointR shareholders upon achievement of certain milestones in accordance with the PointR Merger Agreement, and has mostly had negative cash flows from operations through the six months ended June 30, 2020. These conditions raise substantial doubt about the Company’s ability to continue as a going concern for a period of one year from the date of this filing. Management expects to incur additional losses in the foreseeable future and recognizes the need to raise capital to remain viable. The accompanying consolidated financial statements do not include any adjustments that might be necessary should the Company be unable to continue as a going concern.

The Company’s long-term plans include continued development of its current pipeline of products to generate sufficient revenues to cover its anticipated expenses, through either technology transfer or product sales. Until the Company is able to generate sufficient revenues from its current pipeline, the Company plans on funding its operations through the sale of equity and/or the issuance of debt, combined with or without warrants or other equity instruments.

Between April 2019 and December 2019, the Company entered into various securities purchase agreements (each individually, a “SPA”, and collectively, the “SPAs”) and notes payable (each individual, a “Note”, and collectively, the “Notes”), including a SPA and two notes payable with the Company’s CEO. In total, the Company raised a gross total of $2 million through such SPAs and Notes. For more details on the SPAs and the Notes, see Note 5 below.

In July 2019, the Company entered into a convertible note purchase agreement with PointR. Such convertible note was converted into shares of Mateon upon the completion of the PointR Merger.

During the six months ended June 30, 2020, the Company’s CEO provided short term funding of $70,000 to the Company.

The Company raised $2.5 million in gross proceeds in July and August 2020 through JH Darbie & Co., Inc. (“JH Darbie”). The Company paid $321,000 as placement fees to JH Darbie. JH Darbie and the Company are parties to a placement agent agreement, dated February 25, 2020 pursuant to which DH Darbie has the right to sell a minimum of 40 Units and a maximum of 100 Units on a best efforts basis. The issuance and sale of the Units on July 23, 2020 and August 7, 2020 represented the first and second tranche of the 2020 Financing.

During the six months ended June 30, 2020, the Company recorded a total of approximately $1.7 million in service revenues from GMP and ATB. There are no assurances that the Company would be able to generate revenues for services and/or outlicensing fees in the near future.

Although no assurances can be given as to the Company’s ability to deliver on its revenue plans, or that unforeseen expenses may arise, management believes that the potential equity and debt financing or other potential financing will provide the necessary funding for the Company to continue as a going concern. Also, management cannot guarantee any potential debt or equity financing will be available on favorable terms or at all. As such, management does not believe the Company has sufficient cash for 12 months from the date of this report. If adequate funds are not available on acceptable terms, or at all, the Company will need to curtail operations, or cease operations completely.