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Ethernet patent inventor given permission to question validity of his own patent

EveryTime

This article is clearly only telling a slice of the story, and it seems to be a biased slice.

Most patents go through several iterations, both prior to filing and in response to rejections. Patent attorneys write the claims to be as broad as possible, and narrow them minimally in response to the patent examiner's objections. Each round provides an opportunity to add more claims, keeping the same priority date.

It's quite possible that the inventor of a key claim didn't have anything to do with the subsequent pile-on of broader claims and additional claims.

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