This document discusses well-known trademarks and their protection under international law. It defines a well-known trademark as a mark with substantial public recognition such that use of the mark on unrelated goods or services would imply a connection between them. The document outlines criteria for determining well-known status and notes international agreements like the Paris Convention and TRIPS that require protection of well-known marks from infringement. It also provides examples of well-known trademark disputes in India and discusses how such marks are protected in different countries and regions.