Since people will ask: no, I'm not an investor in Zillow. I just know patent trolling when I see it.
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Do you think software patents, or at least some software patents, are legitimate?
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This is the picture i was looking for

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Ex-IBMer here—can confirm, and the incentive to employees was like $500 or so if you they successfully got an approved patent (and you waived all claims to it). It was very common and many were submitting patents every year. They’ve got quite a thicket by now.
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Signs of dying behemoths?
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If they were thriving, they wouldn’t have time to focus on this.
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