Official mark
An official mark (sometimes denoted by the symbols OM, M, or Ⓜ) is a form of intellectual property which exists in Canada under section 9 of the Trade-marks Act, which allows for the protection of names and designs used by Canadian public authorities (including governments and government agencies, Crown corporations, and certain nonprofit organizations) for goods or services. Official marks are not themselves trademarks, but are a subtype of another category of marks defined in the Trade-marks Act known as "prohibited marks".