4.1 Ownership of Inventions and Prosecution of Patents
4.1.1. Subject to the provisions of this Agreement, title to any inventions conceived or reduced to practice solely by an Aridis employee in the course of implementing the Project Plan shall be owned by Aridis, shall be included within the definition of Project Intellectual Property hereunder, and shall be subject to the grant of rights specified herein. Inventions developed jointly by employees, Affiliates or consultants of PVS and employees and Affiliates of Aridis shall be jointly owned in accordance with U.S. patent laws and regulations and shall be included within the definition of Project Intellectual Property. Aridis may file patent applications on any such inventions at their sole cost and expense. If Aridis chooses not to file for patent protection with respect to any jointly owned inventions developed hereunder, Aridis shall notify PVS in writing of such decision within sufficient time to allow action to be taken by PVS without the loss of potential patent rights, and shall provide PVS with the opportunity to file, at PVS’ sole cost and expense, patent applications on any such jointly owned invention conceived or reduced to practice in the course of the Project Plan.
4.1.2 Aridis shall not abandon any patent application, patent or other right included within the scope of the Project Intellectual Property or the Background Intellectual Property, the effect of which would be to limit or prevent PVS from practicing the intellectual property rights licensed to PVS under this Agreement, without disclosure to PVS and arrangement by mutual agreement with PVS for the protection of PVS license rights.
4.1.3 Except as expressly provided in this Agreement, PVS shall receive no rights under the Aridis Background Intellectual Property and Project Intellectual Property.