If you require a purchase order, vendor registration form, or other documentation, such requirement will in no way relieve, affect or delay your obligation to pay amounts when due.</p> <p>10.7 You are responsible for any taxes, duties, and customs fees associated with the sale of the Services (other than OpenZeppelin’s income tax) (collectively “Taxes”), and you will pay OpenZeppelin for the Services without any reduction for Taxes. If OpenZeppelin is obligated to collect or pay Taxes, the Taxes will be invoiced to you, unless you provide OpenZeppelin with a valid tax exemption certificate.</p> <p>10.8 Except when required by law, all fees are non-cancellable and once paid are non-refundable, even in the case of unused paid Subscription Terms.</p> 11. Indemnification <p>11.1 You agree to indemnify OpenZeppelin, its officers, directors, employees, and agents from and against any liabilities, losses, damages and expenses, including court costs and reasonable attorneys’ fees, associated with any claim or action of any kind whatsoever by a third party or User relating to or arising out of your use of the Services or inability to use the Services, your violation of any these Terms or your violation of any rights, including intellectual property rights, of a third party, or your violation of any applicable laws, rules or regulations.