Under which Act are the official emblem and insignia designs protected from infringement?

The official emblem and insignia designs are protected under the Trademark Act of 1946, also known as the Lanham Act. This Act provides the legal basis for the protection of trademarks and service marks, which includes logos, symbols, and other distinctive designs that identify and distinguish products or services in the marketplace. The protection under this Act prevents unauthorized use of trademarks, helping to ensure that organizations can maintain their unique brand identity and reputation.

In contrast, other options like the Copyright Act of 1976 primarily protect original works of authorship, such as literature and art, rather than designs associated specifically with branding. The Patent Act of 1952 focuses on inventions and processes, which does not apply to emblem designs. The Digital Millennium Copyright Act addresses copyright issues in the digital environment, particularly related to online content, but does not provide the trademark protections necessary for logos and insignias.