The United States Patent and Trademark Office (USPTO) has issued patent US12586086B2, titled 'Product authentication code,' to Dru Reschke. The patent describes a system for validating product authenticity using a grid of selectively placed dots that encode a unique serial number. A key feature is the design of the dots and connecting lines, which allows for human comparison and machine readability even when the code is damaged.

This patent grant signifies the protection of a novel method for product authentication. While not a regulation, it may influence how manufacturers and retailers implement anti-counterfeiting measures. Companies developing or using similar authentication technologies should be aware of this patent to avoid potential infringement. No specific compliance actions are mandated by this patent grant itself, but it highlights a technological development in product security.