Know-how is practical knowledge of how to get something done and relates to a level of specific expertise, as opposed to “know-what” (facts), “know-why” (science), or “know-who” (networking). Know-how is often tacit knowledge, which means that it is difficult to transfer to another person by means of writing it down or verbalizing it. The opposite of tacit knowledge is explicit knowledge.
In the context of industrial property (now generally viewed as intellectual property (IP)), know-how is a component in the transfer of technology in national and international environments, co-existing with or separate from other IP rights such as patents, trademarks and copyright and is an economic asset.
Know-how can be defined as confidentially held, or better, 'closely held' information in the form of unpatented inventions, formulae, designs, drawings, procedures and methods, together with accumulated skills and experience in the hands of a licensor firm's professional personnel which could assist a transferee/licensee of the object product in its manufacture and use and bring to it a competitive advantage. It can be further supported with privately maintained expert knowledge on the operation, maintenance, use/application of the object product and of its sale, usage or disposition.