Permission To Use Architect Plans

[Gary Freidman]

I recently bought a property in Chicago that had a permit on it. The former owner transferred the permit to me but when the inspector came he said I needed to permission to transfer the architect’s plans to me in order to use them for the permit. Neither the owner or the architect said they had ever heard of this. Both are willing to comply but neither knows what the letter or document should say. Does anyone have an example or know what this is? The architect is really unsure what to put in the letter and I can't find anything online other than maybe that its copyrighted and I need permission but can't find a sample letter for anything like that 

Thank you for your help.