Any confidential information shared by a Client with a Freelancer, as well as the Work Product (deliverable or outcome) of the Upwork Relationship, is considered private and confidential (Confidential Information). Once payment is made in full, all Work Product belongs to the Client.
Once a Freelancer has received full payment from the Client, any intellectual property generated by the project becomes the full property of the Client. A Freelancer retains no rights to use it. (However, if a Client makes only a partial payment, they own only the portion of the Work Product that’s already been paid for.)
This ownership means that if you’re a Freelancer, and you’d like to include your latest project in your portfolio, you and your client must agree to that, either before or after you work on the project.