IBM May Not Be the Patent King After All

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No one beats IBM (IBM) on patents. For 17 years running, Big Blue has been granted more U.S. patents than any other applicant, raking in an ­unprecedented 4,914 in 2009. That tally is more than the number of patents granted last year to Microsoft (MSFT), Hewlett-Packard (HPQ), Oracle (ORCL), Apple (AAPL), Accenture (ACN), and Google (GOOG) combined. IBM's worldwide portfolio now covers more than 40,000 inventions for everything from microprocessors for video games to the ­erasable read-write CD.

Nonetheless, a study conducted for by Ocean Tomo, a Chicago intellectual property consulting firm, concludes that IBM's collection of U.S. patents over the past five years ranks only eighth in value. No. 1 is Microsoft, which ranked third, with 2,906 patents issued last year.