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<p>Thank you everybody for reporting on this.</p>
<p>I tried it again on Chrome just now and same error message.
Tried it with https and with http. In Chrome, I cleared all
USPTO-related cookies. Tried it again with https and with http.
Still no joy.</p>
<p>Tried it in Edge. Nope, no joy.</p>
<p>Tried it in Firefox. Nope, no joy.</p>
<p>The various browsers puke on assignmentcenter.uspto.gov with an
error message that sounds like a TLS version fail or an SSL cert
chain-of-trust fail. <br>
</p>
<p>Just now I used the Qualys SSLabs tester to test the access to
assignmentcenter.uspto.gov. I note with great interest that the
Qualys tester carries out its testing in two paths -- Assignment
Center resolves not only to an IPv4 address (151.207.245.82) but
also to an IPv6 address (2610:20:5011:1604:0:0:0:82). It crosses
my mind that the non-identical results among users might be
because some are using IPv6 and others are using IPv4 to reach
Assignment Center.</p>
<p>The Qualys tests finished just now. For both paths (the IPv4 and
the IPv6) Qualys gives a grade of "B" for the quality of USPTO's
TLS and SSL for this domain. For both paths, the USPTO's HTTPS
stack fails to provide forward secrecy. For both paths, the
USPTO's HTTPS stack offers to negotiate to some very old and weak
TLS cipher suites. And HTTP simply fails, for the IPv6 stack.
(The IPv6 stack is not set up with HSTS.)</p>
<p>(For those keeping score at home, blog.oppedahl.com gets a grade
of "A" for the TLS and SSL quality.)</p>
<p>Aha! The defect in USPTO's systems is now clearer. I turned off
IPv6 on the network interface of my notebook computer, and now I
have no difficulty making use of Assignment Center.</p>
<p>The USPTO people don't know how to configure IPv6 correctly for
Assignment Center. <br>
</p>
<p>Time for a blog article I guess.</p>
<p>For those who had difficulty getting Assignment Center to work,
the question I have for you is, do you have your computer set up
to do IPv6 as well as IPv4?</p>
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<p>On 5/7/2024 8:51 AM, Bruce Young via Patentpractice wrote:</p>
<blockquote type="cite"
cite="mid:SJ0PR13MB5572A2C70A1B4F486B760095AEE42@SJ0PR13MB5572.namprd13.prod.outlook.com">
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<p class="MsoNormal"><span>I was just able to record an
assignment. I am using Chrome on Windows 10.</span></p>
<p class="MsoNormal"><span> </span></p>
<div>
<p class="MsoNormal"><span>-Bruce Young</span></p>
<p class="MsoNormal"><span>(712) 541-9822</span></p>
</div>
<p class="MsoNormal"><span> </span></p>
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<div>
<p class="MsoNormal"><b><span>From:</span></b><span>
Patentpractice
<a class="moz-txt-link-rfc2396E" href="mailto:patentpractice-bounces@oppedahl-lists.com"><patentpractice-bounces@oppedahl-lists.com></a>
<b>On Behalf Of </b>Carl Oppedahl via Patentpractice<br>
<b>Sent:</b> Tuesday, May 7, 2024 9:17 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:patentpractice@oppedahl-lists.com">patentpractice@oppedahl-lists.com</a><br>
<b>Cc:</b> Carl Oppedahl <a class="moz-txt-link-rfc2396E" href="mailto:carl@oppedahl.com"><carl@oppedahl.com></a><br>
<b>Subject:</b> [Patentpractice] Is Assignment Center
still broken?</span></p>
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<p class="MsoNormal"> </p>
<p>As far as I can see, Assignment Center is still broken. Are
others able to make use of Assignment Center just now?</p>
<div>
<p class="MsoNormal">On 5/7/2024 2:38 AM, Carl Oppedahl via
Patentpractice wrote:</p>
</div>
<blockquote>
<p>Assignment Center is broken. The system status page <a
href="https://www.uspto.gov/blog/ebiz/"
moz-do-not-send="true" class="moz-txt-link-freetext">
https://www.uspto.gov/blog/ebiz/</a> lists a few systems
that have scheduled outages right now (midnight- 5:30 a.m.
on Tuesday, May 7 ET) but Assignment center is not one of
the listed systems.</p>
<p> </p>
<p><img id="Picture_x0020_1"
src="cid:part1.TxQvrMS9.He0IkQbi@oppedahl.com" class=""
width="711" height="234"></p>
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