I used to work for a company, and i was part of a team who produced work product for the clients. In the contract between the employer and client, it says that the client owns the rights, title, and interest in any and all intellectual property or other products or materials created or developed pursuant to this agreement.
The client authorized me to use some of the work product in my portfolio of work, but the previous employer is stating that its their work product and they sent me a cease and desist letter.
Can the employer legally claim ownership and copyright infringement if the contract says that the client owns everything we created? Thank you for your help