Prevent Abuse of the Legal System Act or the PALS Act This bill imposes restrictions on U.S. patent infringement actions and transactions involving entities covered by certain export regulations. Specifically, the bill's restrictions apply to all entities on a list maintained by the Department of Commerce under the Export Administration Regulations (EAR). Under the EAR, transfers and exports of certain items that implicate national security or foreign policy concerns are restricted when the transaction involves an entity on the list (i.e., a designated entity). In patent infringement actions involving a designated entity, the pleading alleging infringement shall (1) state with particularity the relevant facts and remedies sought, and (2) identify in detail how each patent claim is found in each allegedly infringing product or service. In such actions, a designated entity and its representatives may not obtain nonpublic technical information related to another entity's product or service, through discovery or other means. However, this restriction does not apply to a designated entity's legal counsel. A sale or exclusive license of a U.S. patent to a designated entity shall be prohibited if (1) the designated entity has not undergone a national security review; or (2) a product or service subject to the EAR would infringe the patent, unless an appropriate license is granted. Certain sales or exclusive license of a U.S. patent involving a designated entity and another foreign entity shall comply with certain antitrust provisions, including Federal Trade Commission notification requirements.