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Replacement cost method: Estimations are performed on the basis of the costs that would be spent to obtain an equivalent patent asset with similar use or function. In both methods, present prices are taken into account, i.e. the expenditures as of the valuation date and not the historical costs when these actually happened. [7]
The study was in part based on a survey of 20,000 patent owners who applied for EPO patents between 1993 and 1997. The survey was performed in 2003. 9000 patent owners responded. The patent owners were asked how much effort was required to produce their inventions and how much monetary value their patents had been worth.
Cost approach: The cost approach is based on the economic principle of substitution. This principle states that an investor will pay no more for an asset than the cost to obtain, by purchasing or constructing, a substitute asset of equal utility. There are several cost approach valuation methods, the most common being the historical cost ...
1870. Fourth Patent Act required the use of patent claims in the nearly exact language used today: "particularly point out and distinctly claim the part, improvement, or combination which he claims as his invention or discovery." The practice of dependent claims emerged afterwards. 1890.
Patents were granted without examination since inventor's right was considered as a natural one. Patent costs were very high (from 500 to 1,500 francs). Importation patents protected new devices coming from foreign countries. The patent law was revised in 1844 – patent cost was lowered and importation patents were abolished. [20]
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