Drive for patent-free innovation gathers pace
نویسندگان
چکیده
منابع مشابه
Patent Breadth, Patent Life, and the Pace of Technological Progress
In active investment climates where firms sequentially improve each other’s products, a patent can terminate either because it expires or because a noninfringing innovation displaces its product in the market. We define the length of time until one of these happens as the effective patent life, and show how it depends on patent breadth. We distinguish lagging breadth, which protects against imi...
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ژورنال
عنوان ژورنال: Nature
سال: 2003
ISSN: 0028-0836,1476-4687
DOI: 10.1038/424118a