Commitments and Contingencies	6 Months Ended
Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 17. Commitments and Contingencies On October 29, 2020, a putative securities class action was filed against the Company and certain of its officers and directors (the “Spar Individual Defendants”) in the U.S. District Court for the District of New Jersey, captioned Spar v. Celsion Corporation, et al., Case No. 1:20-cv-15228. The plaintiff alleged that the Company and Individual Defendants made false and misleading statements regarding one of the Company’s drug candidates, ThermoDox®, and brings claims for damages under Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder against all Defendants, and under Section 20(a) of the Exchange Act of 1934 against the Individual Defendants. At this stage of the case neither the likelihood that a loss, if any, will be realized, nor an estimate of possible loss or range of loss, if any, can be determined. On February 6, 2023, the U.S. District Court granted a Motion to Dismiss filed by the Company and Spar Individual Defendants and granted Plaintiff leave to file an amended complaint within 30 days. Plaintiff did not file an amended complaint within the 30-day deadline. In February 2021, a derivative shareholder lawsuit was filed against the Company, as the nominal defendant, and certain of its directors and officers as defendants in the U.S. District Court for the District of New Jersey, captioned Fidler v. Michael H. Tardugno, et al., Case No. 3:21-cv-02662. The plaintiff alleges breach of fiduciary duty and other claims arising out of alleged statements made by certain of the Company’s directors and/or officers regarding ThermoDox®. The Company believes it has meritorious defenses to these claims and intends to vigorously contest this suit. At this stage of the case neither the likelihood that a loss, if any, will be realized, nor an estimate of possible loss or range of loss, if any, can be determined. In August 2021, a complaint regarding a corporate books and records demand was filed against the Company in the Court of Chancery of the State of Delaware, captioned Pacheco v. Celsion Corporation, Case No. 2021-0705. The plaintiff alleged he was entitled to inspect the Company’s books and records concerning the OPTIMA Study and other materials. On May 31, 2023, the Court of Chancery entered the parties’ stipulation dismissing the case without prejudice. In October 2021, an arbitration was commenced against the Company before the CPR Institute for Conflict Prevention & Resolution, captioned Curia New Mexico, LLC v. Celsion Corp., Case No. G-22-85-S. The claimant alleged that the Company failed to pay invoices for the manufacture of two batches of ThermoDox®. On April 19, 2023, the arbitral tribunal issued an interim award, upholding claimant’s claim with respect to one of the two batches of ThermoDox® for an aggregate amount of approximately $583,500 including interest and legal fees which was paid in second quarter 2023 and the arbitrators denied their claim with respect to the other batch of ThermoDox®.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Note 17. Commitments and Contingencies

On October 29, 2020, a putative securities class action was filed against the Company and certain of its officers and directors (the “Spar Individual Defendants”) in the U.S. District Court for the District of New Jersey, captioned Spar v. Celsion Corporation, et al., Case No. 1:20-cv-15228. The plaintiff alleged that the Company and Individual Defendants made false and misleading statements regarding one of the Company’s drug candidates, ThermoDox®, and brings claims for damages under Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder against all Defendants, and under Section 20(a) of the Exchange Act of 1934 against the Individual Defendants. At this stage of the case neither the likelihood that a loss, if any, will be realized, nor an estimate of possible loss or range of loss, if any, can be determined. On February 6, 2023, the U.S. District Court granted a Motion to Dismiss filed by the Company and Spar Individual Defendants and granted Plaintiff leave to file an amended complaint within 30 days. Plaintiff did not file an amended complaint within the 30-day deadline.

In February 2021, a derivative shareholder lawsuit was filed against the Company, as the nominal defendant, and certain of its directors and officers as defendants in the U.S. District Court for the District of New Jersey, captioned Fidler v. Michael H. Tardugno, et al., Case No. 3:21-cv-02662. The plaintiff alleges breach of fiduciary duty and other claims arising out of alleged statements made by certain of the Company’s directors and/or officers regarding ThermoDox®. The Company believes it has meritorious defenses to these claims and intends to vigorously contest this suit. At this stage of the case neither the likelihood that a loss, if any, will be realized, nor an estimate of possible loss or range of loss, if any, can be determined.

In August 2021, a complaint regarding a corporate books and records demand was filed against the Company in the Court of Chancery of the State of Delaware, captioned Pacheco v. Celsion Corporation, Case No. 2021-0705. The plaintiff alleged he was entitled to inspect the Company’s books and records concerning the OPTIMA Study and other materials. On May 31, 2023, the Court of Chancery entered the parties’ stipulation dismissing the case without prejudice.

In October 2021, an arbitration was commenced against the Company before the CPR Institute for Conflict Prevention & Resolution, captioned Curia New Mexico, LLC v. Celsion Corp., Case No. G-22-85-S. The claimant alleged that the Company failed to pay invoices for the manufacture of two batches of ThermoDox®. On April 19, 2023, the arbitral tribunal issued an interim award, upholding claimant’s claim with respect to one of the two batches of ThermoDox® for an aggregate amount of approximately $583,500 including interest and legal fees which was paid in second quarter 2023 and the arbitrators denied their claim with respect to the other batch of ThermoDox®.