It is not uncommon for a commercial landlord to disregard breaches of their lease arrangement with a commercial tenant over the course of the lease term and at the last second to enforce the lease provisions not complied with.

In Tsung Tsin Association v. Luen Fong Produce, 2019 Pa. Super. Unpub. LEXIS 1301 (Apr. 9, 2019), the Pennsylvania Superior Court dealt with the issue as to whether the statute of limitations or the doctrine of laches prevented a commercial landlord from collecting sums allegedly due since 2003 under its lease arrangement with a commercial tenant.