Costs of the Patent System Revisited
Costs of the Patent System Revisited, by Stephan Kinsella, is an estimation of the total cost of the patent system in the USA.
Note: this is the whole patent system, not just software patents. (Can you help? Could the cost of the software patents part be roughly estimated by simply applying the percentage of patents which are software patents?)
 Related pages on en.swpat.org
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