From the FAS site – Project on Government Secrecy Invention Secrecy Activity The Invention Secrecy Act of 1951 requires the government to impose “secrecy orders” on certain patent applications that contain sensitive information, thereby restricting disclosure of the invention and withholding the grant of a patent. Remarkably, this requirement can be imposed even when the application is generated and entirely owned by a private individual or company without government sponsorship or support.