https://www.justice.gov/ust/handbook-chapter-7-trustees
Section 365 provides that the trustee may assume or reject unexpired leases or executory contracts. This authority is subject to court approval. It is also subject to limitations set forth in subsections (b), (c), and (d) of § 365.The trustee's failure to timely reject may result in the accrual of administrative expense liability to the estate. See, e.g., § 365(d)(3) which requires the trustee to timely perform the obligations of the debtor, such as payment of rent, with respect to an unexpired lease of nonresidential real property up until the time of assumption or rejection.
