We opened a new account for an LLC in 2010. Got all the proper documentation-Certificate, Operating Agreement, etc. Recently I was monitoring the account for something different and just did an entity search on the Secretary of State website and the status shows "Inactive" now. Is the bank responsible to acquire additional documentation from the customer at this point? Is there anything I should do since I know that the company is technically not in good standing (for lack of a better word)?

When we have this come up, we typically contact the customer and ask them to get it taken care of. Our policy states that a business must be in good standing with the state. Usually they are not aware of the status and it something simple like a filing or fee they overlooked.

This might also be a discussion with legal counsel. There is some discussion (and states differ) whether that entity has the ability to enter into a contract if inactive at the time of signing.