[Patentpractice] reliable way to compare SHA-512 strings from Patent Center?

[Andrew Berks]

The problem could be that the USPTO does some processing on their end and
that changes the file from the version that you uploaded so the hash
strings will never match. Keep in mind however that humans have to look at
these files and humans don't read computer bits directly. We read text and
images.


Andrew H. Berks, Ph.D., J.D.
Patent Attorney
Berks IP Law PLLC
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New York NY 10004 (US)
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On Fri, Dec 13, 2024 at 3:00 AM William Ahmed via Patentpractice <
patentpractice at oppedahl-lists.com> wrote:

> Dear List,
>
> BACKGROUND (The Old Days -- EFS Web)
>
> Until 2023, we always submitted filings via EFS web. EFS web provided the
> BYTE COUNT upon filing.
>
> This was great and important.
>
> If 3 years later, when filing the figures for a continuation application,
> I wanted to make 100% sure that I was re-filing the *exact same pdf file *(instead
> of another version with the same file-name),
> I would check the byte count (usually using an MS-DOS window - yeah, I am
> over 50 years old) to make sure.
>
>
> PATENT CENTER (I need the same functionality that I used to have)
>
> Now we live in the world of SHA-512 - Patent Center gives SHA-512 rather
> than bye count.
> I want to do the same for Patent center - I want the ability to take a pdf
> file on my computer (e.g. 11 months after filing a US provisional), run it
> through SHA-512 and reproduce the SAME SHA-512 string.
>
> I am embarrassed to say that I TRIED and I  FAILED
>
> In Jan 2024, a US provisional was filed -- the drawings file
> (USProvfiguresJan2024.pdf had a SHA-512 value of "abcdefg".
> I now downloaded and installed a free "Digital Volcano Hash tool" -- I
> gave it USProvfiguresJan2024.pdf and asked for the
> SHA-512 string.
> The 'SHA-512' hash strings did NOT match.
>
>
> What am I doing wrong?
>
> Thanks,
> Bill
> --
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>
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>
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