Revenue Recognition The Company adopted ASC Topic 606, Revenue from Contracts with Customers as of January 1, 2018 using the modified retrospective transition method. The core principle of the new revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The following five steps are applied to achieve that core principle:  Step 1: Identify the contract with the customer  Step 2: Identify the performance obligations in the contract  Step 3: Determine the transaction price  Step 4: Allocate the transaction price to the performance obligations in the contract  Step 5: Recognize revenue when the company satisfies a performance obligation A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC 606. In order to identify the performance obligations in a contract with a customer, a company must assess the promised goods or services in the contract and identify each promised good or service that is distinct. A performance obligation meets ASC 606's definition of a "distinct" good or service (or bundle of goods or services) if both of the following criteria are met:  The customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (i.e., the good or service is capable of being distinct).  The entity's promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract). If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer. The consideration promised in a contract with a customer may include fixed amounts, variable amounts, or both. When determining the transaction price, an entity must consider the effects of all of the following:  Variable consideration  Constraining estimates of variable consideration  The existence of a significant financing component in the contract  Noncash consideration  Consideration payable to a customer Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The transaction price is allocated to each performance obligation on a relative standalone selling price basis. The transaction price allocated to each performance obligation is recognized when that performance obligation is satisfied, at a point in time or over time as appropriate. In general, the Company is required to make certain judgments and estimates in connection with the accounting for revenue contracts with customers. Such areas may include identifying performance obligations in the contract, estimating the timing of satisfaction of performance obligations, determining whether a promise of consideration, whether a license to intellectual property or an entitlement to payment of a percentage of net proceeds, is distinct from other promised goods or services, evaluating whether consideration transfers to a customer at a point in time or over time, allocating the transaction price to separate performance obligations, determining whether contracts contain a significant financing component, and estimating revenues recognized at a point in time for licensed sales. Patent Licensing Fees Revenue is recognized upon transfer of control of promised bundled intellectual property rights and other contractual performance obligations to licensees in an amount that reflects the consideration we expect to receive in exchange for those intellectual property rights. Revenue contracts that provide promises to grant "the right" to use intellectual property rights as they exist at the point in time at which the intellectual property rights are granted, are accounted for as performance obligations satisfied at a point in time and revenue is recognized at the point in time that the applicable performance obligations are satisfied and all other revenue recognition criteria have been met. For the periods presented, revenue contracts executed by the Company primarily provided for the payment of contractually determined, one-time, paid-up license fees in consideration for the grant of certain intellectual property rights for patented technologies owned or controlled by the Company's operating subsidiaries. Intellectual property rights granted included the following, as applicable: (i) the grant of a non-exclusive, retroactive and future license to manufacture and/or sell products covered by patented technologies, (ii) a covenant-not-to-sue, (iii) the release of the licensee from certain claims, and (iv) the dismissal of any pending litigation. The intellectual property rights granted were perpetual in nature, extending until the legal expiration date of the related patents. The individual intellectual property rights are not accounted for as separate performance obligations, as (i) the nature of the promise, within the context of the contract, is to transfer combined items to which the promised intellectual property rights are inputs and (ii) the Company's promise to transfer each individual intellectual property right described above to the customer is not separately identifiable from other promises to transfer intellectual property rights in the contract. Since the promised intellectual property rights are not individually distinct, the Company combined each individual IP right in the contract into a bundle of IP rights that is distinct, and accounted for all of the intellectual property rights promised in the contract as a single performance obligation. The intellectual property rights granted were "functional IP rights" that have significant standalone functionality. The Company's subsequent activities do not substantively change that functionality and do not significantly affect the utility of the IP to which the licensee has rights. The Company's subsidiaries have no further obligation with respect to the grant of intellectual property rights, including no express or implied obligation to maintain or upgrade the technology, or provide future support or services. The contracts provide for the grant (i.e. transfer of control) of the licenses, covenants-not-to-sue, releases, and other significant deliverables upon execution of the contract. Licensees legally obtain control of the intellectual property rights upon execution of the contract. As such, the earnings process is complete and revenue is recognized upon the execution of the contract, when collectability is probable and all other revenue recognition criteria have been met. Revenue contracts generally provide for payment of contractual amounts within 30-90 days of execution of the contract. Contractual payments made by licensees are generally non-refundable. We do not have any significant payment terms, as payment is received shortly after goods are delivered or services are provided, therefore there is no significant financing component or consideration payable to the customer in these transactions. Licensed Sales The balance of our revenue, from licensed sales, is not significant but includes sales-based revenue contracts pursuant to purchase orders. There is only one distinct performance obligation in each purchase order, transfer of the promised good to the customer, and the customer can benefit from the good together with other resources readily available to the customer. For licensed sales, the transaction price is allocated to the performance obligation on a relative standalone selling price basis per the purchase order, and the Company includes in the transaction price some or all of an amount of estimated variable consideration to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Estimates are generally based on historical levels of activity, if available. Notwithstanding, revenue is recognized for a licensed sale when the performance obligation has been satisfied  transfer of the good to the customer. The purchase order generally provides for payment of contractual amounts within 30 days of transfer of the goods to the customer, therefore there is no significant financing component or consideration payable to the customer in these transactions. Cost of Revenues Cost of revenues include the costs and expenses incurred in connection with our patent licensing and enforcement activities, including inventor royalties paid to original patent owners, contingent litigation funding fees, contingent legal fees paid to external patent counsel, other patent-related legal expenses paid to external patent counsel, licensing and enforcement related research, consulting and other expenses paid to third-parties and the amortization of patent-related investment costs. These costs are included under the caption "Cost of revenues" in the accompanying consolidated statements of operations. No such fees are recognized as cost of revenue to the extent that the Company has no obligation with respect to such fees prior to a settlement or license.