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A patent portfolio is a collection of patents owned by a single entity, such as an individual or corporation. The patents may be related or unrelated. Patent applications may also be regarded as included in a patent portfolio. The monetary benefits of a patent portfolio include a market monopoly position for the portfolio holder and revenue from licensing the intellectual property. Non monetary benefits include strategic advantages like first-mover advantages and defense against rival portfolio holders. Constituting a patent portfolio may also be used to encourage investment.〔"My company is relatively new, and we are interested in ... encouraging investment by demonstrating a growing international patent portfolio." in (Entering the national phase early where the international application has not yet been published ), Practical Advice, PCT Newsletter No. 10/2011, page 15ff.〕 Because patents have a fixed lifespan (term of patent), elements of a portfolio of patents constantly expire and enter the public domain. ==Market value and evaluation== (詳細はOcean Tomo LLC, for example, maintains an index of corporations whose market value is governed in large part by their patent portfolio value. The index is called "Ocean Tomo 300 Patent Index".〔Ocean Tomo web site, http://www.oceantomo.com/indexes.html ''Ocean Tomo 300 Patent Index''. Accessed on November 27, 2006.〕 Another example is ''IPscore''—acquired in 2006 by the European Patent Office— a software application, developed by the Danish Patent and Trademark Office. The application estimates "the economic value of patents and development projects".〔European Patent Office web site, (''The European Patent Office acquires IPscore, the patent portfolio evaluation tool'' ), Official Communication, December 29, 2006, consulted on December 30, 2006.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「patent portfolio」の詳細全文を読む スポンサード リンク
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