human: Do I need to pay both the request fee and the post-institution fee when I file an inter partes review petition on or after March 19, 2013?
assistant: On filing a petition for inter partes review, payment of both the inter partes request fee ($9,000) and post-institution fee ($14,000) are due. In addition, the appropriate request excess claims fee is required on filing if the petition is challenging more than 20 claims, and the appropriate post-instituion excess claims fee is required on filing if the petition is challenging more than 15 claims. A filing date would not be accorded unless the required fees are paid. For example, for a petition that is challenging 25 claims, the following fees are rquired on filing: The inter partes request fee (§ 41.15(a)(1)): $9,000 The inter partes post-instituion fee (§ 41.15(a)(2)): $14,000 Excess claims fee ($ 200 for each claim in excess of 20) for requesting 5 claims in excess of 20 (§41.14(a)(3)): $1,000 Post-institution excess claims fee ($400 for each claim in excess of 15) for requestion 10 claims in excess of 15 (§ 41.15(a)(4): $4,000 Total: $28,000