Note 6 - Revenue Sharing, Note Purchase Agreement	12 Months Ended
Dec. 31, 2022
Notes to Financial Statements
Revenue Sharing Note Purchase Agreement [Text Block]	6. REVENUE SHARING, NOTE PURCHASE AGREEMENT On December 24, 2014, the Company entered into an Amended and Restated Revenue Sharing and Note Purchase Agreement (the “Revenue Sharing Agreement”) with AND34 Funding LLC (“AND34”) (acting as the “Revenue Participants,” the “Note Purchasers,” and the “Collateral Agent”), which was retroactively effective as of February 14, 2014. Under the Revenue Sharing Agreement, the Company granted AND34 a perpetual predetermined share in the rights of the Company’s specified future revenues from patents (“Monetization Revenues”) owned by the Company (the “Patents”) in exchange for $3,500,000, which was fully repaid as of September 30, 2016 and issued certain notes containing the features described in the Revenue Sharing Agreement (the “Notes”), which were repaid in 2016. In 2016, 2017, 2019, 2021, 2022 and 2023, the parties executed and amended a rider to the Revenue Sharing Agreement (the “Rider”) pursuant to which Andrea agreed to issue and sell to AND34 additional Notes up to an aggregate amount of $11,500,000 (the “Additional Notes”), or such greater amount as AND34 may agree to in its sole discretion. The Additional Notes and related payment -–in-kind (“PIK”) Interest have a maturity date of January 20, 2026. The proceeds of the Additional Notes will be used to pay certain expenses related to the Revenue Sharing Agreement and expenses of the Company incurred in pursuing patent monetization. The Patents are collateral to the Additional Notes. As of December 31, 2021, there was $2,024,422 of Additional Notes principal and $276,770 PIK interest outstanding. As of December 31, 2022, there was $2,169,422 of Additional Notes principal and $375,112 PIK interest outstanding. Any Monetization Revenues will first be applied 100% to the payment of accrued and unpaid interest on, and then to repay outstanding principal of, the Additional Notes. After the Additional Notes are paid in full, the Monetization Revenues will be allocated amongst the Revenue Participants and the Company in accordance with certain predetermined percentages (based on aggregate amounts received by the Revenue Participants) ranging from 50% to ultimately 20% to the Revenue Participants. Monetization Revenues is defined in the Revenue Sharing Agreement to include, but is not limited to, amounts that the Company receives from third parties with respect to the Patents, which may include new license revenues, certain product revenue, payments and judgments. Monetization Revenues and associated expenses are included in the Company’s Patent Monetization Segment (See Note 14). The Revenue Sharing Agreement contains many stipulations between the parties regarding the handling of various matters related to the monetization of the Patents including tax treatment. Following an Event of Default under the Revenue Sharing Agreement, the Note Purchasers and Revenue Participants may proceed to protect and enforce their rights by suit or other appropriate proceeding, either for specific performance or the exercise of any power granted under the Revenue Sharing Agreement or ancillary documents including the Additional Notes.

Note 6 - Revenue Sharing, Note Purchase Agreement

12 Months Ended

Dec. 31, 2022

Revenue Sharing Note Purchase Agreement [Text Block]

6. REVENUE SHARING, NOTE PURCHASE AGREEMENT

On December 24, 2014, the Company entered into an Amended and Restated Revenue Sharing and Note Purchase Agreement (the “Revenue Sharing Agreement”) with AND34 Funding LLC (“AND34”) (acting as the “Revenue Participants,” the “Note Purchasers,” and the “Collateral Agent”), which was retroactively effective as of February 14, 2014. Under the Revenue Sharing Agreement, the Company granted AND34 a perpetual predetermined share in the rights of the Company’s specified future revenues from patents (“Monetization Revenues”) owned by the Company (the “Patents”) in exchange for $3,500,000, which was fully repaid as of September 30, 2016 and issued certain notes containing the features described in the Revenue Sharing Agreement (the “Notes”), which were repaid in 2016. In 2016, 2017, 2019, 2021, 2022 and 2023, the parties executed and amended a rider to the Revenue Sharing Agreement (the “Rider”) pursuant to which Andrea agreed to issue and sell to AND34 additional Notes up to an aggregate amount of $11,500,000 (the “Additional Notes”), or such greater amount as AND34 may agree to in its sole discretion. The Additional Notes and related payment -–in-kind (“PIK”) Interest have a maturity date of January 20, 2026. The proceeds of the Additional Notes will be used to pay certain expenses related to the Revenue Sharing Agreement and expenses of the Company incurred in pursuing patent monetization. The Patents are collateral to the Additional Notes. As of December 31, 2021, there was $2,024,422 of Additional Notes principal and $276,770 PIK interest outstanding. As of December 31, 2022, there was $2,169,422 of Additional Notes principal and $375,112 PIK interest outstanding.

Any Monetization Revenues will first be applied 100% to the payment of accrued and unpaid interest on, and then to repay outstanding principal of, the Additional Notes. After the Additional Notes are paid in full, the Monetization Revenues will be allocated amongst the Revenue Participants and the Company in accordance with certain predetermined percentages (based on aggregate amounts received by the Revenue Participants) ranging from 50% to ultimately 20% to the Revenue Participants. Monetization Revenues is defined in the Revenue Sharing Agreement to include, but is not limited to, amounts that the Company receives from third parties with respect to the Patents, which may include new license revenues, certain product revenue, payments and judgments. Monetization Revenues and associated expenses are included in the Company’s Patent Monetization Segment (See Note 14).

The Revenue Sharing Agreement contains many stipulations between the parties regarding the handling of various matters related to the monetization of the Patents including tax treatment. Following an Event of Default under the Revenue Sharing Agreement, the Note Purchasers and Revenue Participants may proceed to protect and enforce their rights by suit or other appropriate proceeding, either for specific performance or the exercise of any power granted under the Revenue Sharing Agreement or ancillary documents including the Additional Notes.