Note 3. Revenue Sharing, Note Purchase Agreement and Long-Term Debt

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 and 2019, 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 most recent rider executed in 2019 increased the aggregate principal amount from $7,500,000 to $11,500,000, whereby $4,100,000 remains available to the Company for sale and issuance. The Additional Notes have a maturity date of August 31, 2022. 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. As of March 31, 2019, there was $1,484,422 of Additional Notes principal and $85,489 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 the Revenue Participants to ultimately 20%. 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 8).

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.

Long-term debt

	March 31, 2019		December 31, 2018
Note Payable	$	1,484,422	$	1,484,422
PIK interest		85,489		66,862
Total long-term debt		1,569,911		1,551,284
Less: current maturities of long-term debt		-		-
Long-term debt, net of current maturities	$	1,569,911	$	1,551,284

The unpaid principal amount of the Additional Notes (including any PIK Interest) has an interest rate equal to LIBOR (as defined in the Revenue Sharing Agreement) plus 2% per annum, (totaling 4.80% and 4.40% at March 31, 2019 and December 31, 2018, respectively); provided that upon and during the continuance of an Event of Default (as set forth in the Revenue Sharing Agreement), the interest rate will increase an additional 2% per annum. Interest may be paid in cash at the option of the Company and otherwise shall be paid by increasing the principal amount of the Additional Notes by the amount of such interest (“PIK Interest”). The Company may prepay the Additional Notes from time to time in whole or in part, without penalty or premium. During the three months ended March 31, 2019 and year ended December 31, 2018, $0 and $300,000, respectively, of Additional Notes were issued to AND34. As of March 31, 2019, the remaining amount of Additional Notes that could be issued is $100,000. As a result of the Rider, as of May 10, 2019, the remaining amount of Additional Notes that can be issued is $4,100,000. Amounts reported as current maturities of long-term debt reflect amounts expected to be paid in the next twelve months.