The Company accounts for revenue in accordance with the provisions of ASC topic 605 Revenue Recognition. The Company earns revenue from non-refundable upfront fees, milestone payments upon achievement of specified research or development, exclusivity milestone payments and licensing payments on sales of resulting products. Revenue is realized or realizable and earned when evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the customer is fixed or determinable, and collectability is reasonably assured. From time to time, the Company enters into transactions that represent multiple-element arrangements. Management evaluates arrangements with multiple deliverables to determine whether the deliverables represent one or more units of accounting for the purpose of revenue recognition. A delivered item is considered a separate unit of accounting if the delivered item has stand-alone value to the customer, the fair value of any undelivered items can be reliably determined, and the delivery of undelivered items is probable and substantially in the Company's control. The relevant revenue recognition accounting policy is applied to each separate unit of accounting. Licensing The Company recognizes revenue from the licensing of the Company's drug delivery technologies, products and product candidates. Licensing revenue is recognized as earned in accordance with the contract terms when the amounts can be reasonably estimated and collectability is reasonably assured. The Company has a license and commercialization agreement with Par Pharmaceutical Inc. (Par). Under the exclusive territorial license rights granted to Par, the agreement requires that Par manufacture, promote, market, sell and distribute the product. Licensing revenue amounts receivable by the Company under this agreement are calculated and reported to the Company by Par, with such amounts generally based upon net product sales and net profit which include estimates for chargebacks, rebates, product returns, and other adjustments. Licensing revenue payments received by the Company from Par under this agreement are not subject to further deductions for chargebacks, rebates, product returns, and other pricing adjustments. Based on this arrangement and the guidance per ASC topic 605, the Company records licensing revenue as earned in the consolidated statements of operations and comprehensive loss. The Company also has a license and commercial supply agreement with Mallinckrodt LLC (Mallinckrodt) which provides Mallinckrodt an exclusive license to market, sell and distribute in the U.S. three drug product candidates for which the Company has ANDAs filed with the FDA, one of which (the Companys generic Seroquel XR) received final approval from the FDA in 2017. Under the terms of this agreement, the Company is responsible for the manufacture of approved products for subsequent sale by Mallinckrodt in the U.S. market. Following receipt of final FDA approval for its generic Seroquel XR, the Company began shipment of manufactured product to Mallinckrodt. Licensing revenue in respect of manufactured product is reported as revenue in accordance with ASC topic 605. Once product is sold by Mallinckrodt, the Company receives downstream licensing revenue amounts calculated and reported by Mallinckrodt, with such amounts generally based upon net product sales and net profit which includes estimates for chargebacks, rebates, product returns, and other adjustments. Such downstream licensing revenue payments received by the Company under this agreement are not subject to further deductions for chargebacks, rebates, product returns, and other pricing adjustments. Based on this agreement and the guidance per ASC topic 605, the Company records licensing revenue as earned in the consolidated statements of operations and comprehensive loss. Milestones The milestone method recognizes revenue on substantive milestone payments in the period the milestone is achieved. Milestones are considered substantive if all of the following conditions are met: (i) the milestone is commensurate with either the vendors performance to achieve the milestone or the enhancement of the value of the delivered item or items as a result of a specific outcome resulting from the vendors performance to achieve the milestone; (ii) the milestone relates solely to past performance; and (iii) the milestone is reasonable relative to all of the deliverables and payment terms within the arrangement. Non-substantive milestone payments that might be paid to the Company based on the passage of time or as a result of a partners performance are allocated to the units of accounting within the arrangement; they are recognized as revenue in a manner similar to those units of accounting. Research and development Under arrangements where the license fees and research and development activities can be accounted for as a separate unit of accounting, non-refundable upfront license fees are deferred and recognized as revenue on a straight-line basis over the expected term of the Company's continued involvement in the research and development process. Deferred revenue Deferred revenue represents the funds received from clients, for which the revenues have not yet been earned, as the milestones have not been achieved, or in the case of upfront fees for drug development, where the work remains to be completed. During the year ended November 30, 2016, the Company received an up-front payment of $3,000,000 from Mallinckrodt pursuant to the Mallinckrodt license and commercial supply agreement, and initially recorded it as deferred revenue, as it did not meet the criteria for recognition. For the year ended November 30, 2018, the Company recognized $300,000 (2017 - $300,000) of revenue based on a straight-line basis over the expected term of the Mallinckrodt agreement of 10 years. In 2015, the Company received an up-front payment of $150,000 from Teva Pharmaceuticals USA, Inc. which the Company recognized as revenue during the year ended November 30, 2017. As of November 30, 2018, the Company has recorded a deferred revenue balance of $2,362,500 (November 30, 2017 - $2,662,500) relating to the underlying contracts, of which $300,000 (November 30, 2017 - $300,000) is considered a current portion of deferred revenue.