The Patent Indemnity Clause describes the obligations of the contractor and the customer to protect each other from claims related to the infringement of third-party intellectual property rights. The contractor agrees to indemnify and hold the customer harmless from any claims, losses, and expenses related to the infringement of patents or other intellectual property rights arising from the installation or use of the facilities, as well as the sale of products produced by these facilities. This obligation does not extend to the use of the facilities for purposes other than those specified or reasonably inferred from the contract, or in combination with equipment not supplied by the contractor.