Once the issue fee has been paid for an application, what is true about submitting an IDS?

Once the issue fee has been paid for a patent application, it is not permissible to submit an information disclosure statement (IDS). At this stage in the patent prosecution process, the application is essentially considered "closed" for further submissions that would amend or affect the prosecution. The payment of the issue fee signifies the applicant's intention to proceed with the issuance of the patent, and the application is then sent to grant.

While there are specific scenarios under which a supplementary examination might allow for additional information to be considered post-issue, the general rule is that an IDS cannot be submitted after the issue fee has been paid. Thus, the statement that an IDS cannot be submitted after payment of the issue fee is correct.