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The Commonwealth of Nations, commonly known as the Commonwealth (formerly the British Commonwealth), is an intergovernmental organisation of 53 member states that were mostly territories of the former British Empire. The Commonwealth operates by intergovernmental consensus of the member states, organised through the Commonwealth Secretariat, and non-governmental organisations, organised through the Commonwealth Foundation. (Wikipedia)

A patent office is a governmental or intergovernmental organization which controls the issue of patents. In other words, "patent offices are government bodies that may grant a patent or reject the patent application based on whether the application fulfils the requirements for patentability." (Wikipedia)

An intergovernmental organization or international governmental organization (IGO) is an organization composed primarily of sovereign states (referred to as member states), or of other intergovernmental organizations. (Wikipedia)

Under the “simplified procedure” established by the Treaty of Lisbon, revisions concerning internal EU polices and actions can be made without the need for a convention or intergovernmental conference. (Open Democracy)