First, a lease is not an employment agreement. Different situation. Second, did the addendum directly contradict or void language in the standard form lease cr

First, a lease is not an employment agreement. Different situation. Second, did the addendum directly contradict or void language in the standard form lease crafted by corporate legal? If not, there's probably more room for negotiation there. Even in standard employee agreements, there's often an "invention disclosure form" that sort of operates as a built-in addendum for the new hire to fill out. This helps prevent the employer from claiming ownership over things the employee worked on prior to hire.