[Patentpractice] mistakes in 'assignment search'

[Daniel Ratoff]

The assignment search at the USPTO has been broken for a while now.

  But mistakes do happen on the prosecution side, rarely.  Over the past
20+ years I have noticed it happen at least 3 times that I remember.

  You can always check the reel and frame if there is a mistake in any of
the numbers.

1. Personally, I compare the assignment and the cover sheet once the
application has been published (this wasn't always the case).
2. I also use patsnap to keep track of my portfolio and notice when someone
accidentally claims ownership of one of my patents.

On Fri, Jan 10, 2025 at 5:04 AM William Ahmed via Patentpractice <
patentpractice at oppedahl-lists.com> wrote:

> We filed a patent application in 2023 which matured into a granted US
> patent in Q4 2024.
>
> During a due diligence, we searched for the assignment of the granted
> patent at THIS link -->
>
> https://assignment.uspto.gov/patent/index.html#/patent/search
>
> We typed in the patent number, and the results were the 'no assignment was
> filed'
>
>
> That didn't make sense - we DID submit an assignment shortly after filing
> the application in 2023, and this assignment was processed by the USPTO.
>
> After wasting more time, we did a search again, this time listing the
> APPLICATION NUMBER (rather than the patent number).
> When we searched by application number, we were able to see the frame and
> reel number.
>
> Very surprising
>
> --
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>
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