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Level of invention (or degree of inventiveness, or level of solution, or rank of solution, or rank of invention) is a relative degree of changes to the previous system (or solution) in the result of solution of inventive problem (one containing a contradiction). Term was defined and introduced by TRIZ author G. S. Altshuller.
After initially reviewing 200,000 patent abstracts, Altshuller selected 40,000 as representatives of high level inventive solutions. The remainder involved direct improvements easily recognized within the specialty of the system.
Altshuller separated the patents' different degrees of inventiveness into five levels:
These levels of invention are applied to solutions rather than problems requiring a system of solution.
Also level of invention and the potential for innovation in any nation, geographical area or economic activity is as measurement in the concept of innovative capacity originally introduced by Prof. Suarez-Villa in 1990.
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