[E-trademarks] Regex search

[Richard Schafer]

The fact that we have to make guesses about how the indexes work shows how poorly the PTO has implemented and documented this system. I wonder if examining attorneys have the same poor explanation about how the indexes work. If they do, that's really bad. If they have a fuller explanation, what possible reason would the PTO have for not making that explanation public?

Best regards,
Richard A. Schafer | Schafer IP Law
P.O. Box 230081 | Houston, TX 77223
M: 832.283.6564 | richard at schafer-ip.com

-----Original Message-----
From: E-trademarks <e-trademarks-bounces at oppedahl-lists.com> On Behalf Of Neil R. Ormos via E-trademarks
Sent: Friday, March 15, 2024 6:19 PM
To: E-trademarks Mailing List <e-trademarks at oppedahl-lists.com>
Cc: Neil R. Ormos <ormos-lists at ormos.org>
Subject: Re: [E-trademarks] Regex search

Pamela Chestek via E-trademarks wrote:

> Can anyone explain to me why the first two search queries didn't give 
> me the same results as the third query? I was in expert mode.
 
> GS:/t\-shirt/    0
> GS:/t[-]shirt/    0
> GS:t-shirt    511200

When the GS index is used with a regular expression search, the index appears to contain each of the words of the goods and services field in isolation.  Spaces and hyphens separate words, but some other punctuation does not.  Your regexps do not match because t-shirt does not appear as a single word in the index. 

The GS index behaves differently when used with other types of search.

  <https://oppedahl-lists.com/pipermail/e-trademarks_oppedahl-lists.com/2024-January/000554.html>

And the GS2 index also behaves differently.  

GS2:/t[-]shirt/

returns 61,341 records.

I know GS2 does some sort of stemming, but I haven't been able to synthesize a complete explanation.  If someone has GS2 figured it out, or knows of a document that describes its behavior, I hope they will explain.


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