The United States Patent and Trademark Office (USPTO) has granted design patent USD1120091S1 for a sleep mask. The patent, filed on May 28, 2024, by inventor Dongbin Qiu, is officially recognized with an effective date of March 24, 2026. This grant pertains to the ornamental design of the sleep mask, not its functional aspects.

This patent grant is primarily an intellectual property notification. For manufacturers of sleep masks, this signifies that the specific design covered by USD1120091S1 is protected. Companies should ensure their product designs do not infringe upon this granted patent to avoid potential legal disputes. No immediate compliance actions are required beyond standard due diligence regarding intellectual property rights.