Google patents link-based spam filtering?

SEO by the SEA says Google has patented link-based spam filtering.

Certainly seems like an interesting idea, if less than novel. Check links inside spam and phishing emails against an index of content. If the link shows, add points. Of course, most blog spam filters already have this capability (vis-a-vis link blacklists), but I guess this could benefit Gmail (since it’s been rumored that Google has direct access to a lot of linked content).

Nevertheless, I wonder…who is Johnny Chen, and why doesn’t the referenced patent app have a Google assignment? Maybe they [Google] don’t want to look like patent trolls. Or maybe the “university” I bought that “life experience law degree” from isn’t legit.


Bill says:

Hi Michael,

There’s a separate assignment database at the USPTO, and a search for Google as assignee shows this patent application listed (or you can put in the document publication number, to go directly to the information about this document). Those assignments don’t always appear on the patent filings themselves.

The document does note a related filing, “Method and Apparatus for Characterizing Documents Based on Clusters of Related Words,” which lists Georges Harik as one inventor. His name has been on a lot of the Gmail patent filings.

I guess the most interesting thing about it is the use of conceptual catagorization of the pages linked to, which uses some complex semantic analysis.


Thanks kindly for the clarification. I knew that “law degree” wasn’t worth the paper it was printed on.


Bill says:

You’re welcome.

Not so sure about the law degree though. I spent a lot of the last two years earning mine playing with the electronic databases at LexisNexis. I wouldn’t have found that assignment database without poking around the different parts of the USPTO web site, which isn’t necessarily something they really teach in law school. 🙂

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