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04 January 2009, 12:06

IEEE ranks patent applications

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For the third year running the Institute of Electrical and Electronics Engineers (IEEE) has ranked companies in different sectors to estimate the power that these companies have, based upon their patent portfolio. Unsurprisingly, Microsoft came top in the "Computer Software" category and IBM tops the "Computer Systems" chart.

The analysis takes into account more than the number of patents; among other factors, the "power" of patents is calculated using a methodology that also looks at how "self referential" a patent is in referring to other patents owned by the same patent holder. The final ranking figure is called the "Adjusted Pipeline Power". As an example, Blackberry manufacturer RIM has an adjusted pipeline power of 1065, placing it ahead of industry giants like AT&T at 804 points and Siemens AG at 425 points. RIM holds only 136 patents, compared to AT&T's 705 patents and Siemens' 1305 patents.

The full list, broken down into categories, is available on the IEEE web site along with the IEEE's own analysis of the results.


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