<div dir="ltr">Prof. Tushnet's question -- about the USPTO being estopped from asserting invalidity -- is exactly how I saw this case first raised....<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:small">Tim Ackermann</div><div style="font-size:small">The Ackermann Law Firm</div><p><font face="verdana, sans-serif" size="1"><span style="background-image:initial;background-position:initial;background-repeat:initial">E: <a href="mailto:tim@ackermannlaw.com" target="_blank">tim@ackermannlaw.com</a></span><br><span style="background-image:initial;background-position:initial;background-repeat:initial">P: 817.305.0690</span><br>
<span style="background-image:initial;background-position:initial;background-repeat:initial">F: 214.453.0810</span><br>
<span style="background-image:initial;background-position:initial;background-repeat:initial">W: <a href="http://ackermannlaw.com" target="_blank">ackermannlaw.com</a></span><br>
<span style="background-image:initial;background-position:initial;background-repeat:initial">O: 1701 W. Northwest Hwy. Ste. 100</span><br>
<span style="background-image:initial;background-position:initial;background-repeat:initial"> Grapevine TX 76051</span></font></p></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 29, 2024 at 5:52 PM Tushnet, Rebecca via E-trademarks <<a href="mailto:e-trademarks@oppedahl-lists.com">e-trademarks@oppedahl-lists.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg2683655362537312130">
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I have to ask: are they estopped from challenging the validity of the patent?</div>
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Rebecca Tushnet</div>
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she/her</div>
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Frank Stanton Professor of the First Amendment, Harvard Law School</div>
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<div id="m_2539639478963440773divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> E-trademarks <<a href="mailto:e-trademarks-bounces@oppedahl-lists.com" target="_blank">e-trademarks-bounces@oppedahl-lists.com</a>> on behalf of Alex Butterman via E-trademarks <<a href="mailto:e-trademarks@oppedahl-lists.com" target="_blank">e-trademarks@oppedahl-lists.com</a>><br>
<b>Sent:</b> Monday, April 29, 2024 6:49 PM<br>
<b>To:</b> <a href="mailto:e-trademarks@oppedahl-lists.com" target="_blank">e-trademarks@oppedahl-lists.com</a> <<a href="mailto:e-trademarks@oppedahl-lists.com" target="_blank">e-trademarks@oppedahl-lists.com</a>><br>
<b>Cc:</b> Alex Butterman <<a href="mailto:abutterman@dbllawyers.com" target="_blank">abutterman@dbllawyers.com</a>><br>
<b>Subject:</b> [E-trademarks] USPTO accused of infringing 6 patents in rare lawsuit</font>
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<p><font size="2" face="Arial"><span style="font-size:11pt;font-family:Arial,sans-serif">This looks like a blog topic for Carl’s blog if not yet already written.
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<p style="line-height:18.75pt"><font size="3" color="#999999" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:rgb(153,153,153)"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__r.smartbrief.com_resp_rVkpCjqUzaDzBirVCignacCicNySjC-3Fformat-3Dmultipart&d=DwMFAg&c=WO-RGvefibhHBZq3fL85hQ&r=E-M4OQvQBo8UWqE1LwEiDR3PcWlfM0I-0jiI1c4ous0&m=cnzevWmVJhPw9pQm41fuI4VvX7QuDgrkcP3souHRtwPgnhSv5b50QJaQU2Wqt8a7&s=dw1RVImGmGLKcnn1Vf5dOfVc7JwBE_b6BnYgUScHcv4&e=" target="_blank"><b><font size="5" color="#e4002b"><span style="font-size:16pt;color:rgb(228,0,43);font-weight:bold;text-decoration:none">USPTO
accused of infringing 6 patents in rare lawsuit</span></font></b></a> </span></font><font size="3" color="#999999" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:rgb(153,153,153)"></span></font></p>
<p style="line-height:18.75pt"><font size="3" color="black" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:black">A lawsuit filed against the US Patent and Trademark Office by Virginia-based Factor2
Multimedia Systems alleges that the agency infringed six patents via the use of two-factor authentication on USPTO websites, marking a rare instance of a patent infringement lawsuit against the agency. A Bloomberg Law analysis found 51 patent infringement
cases have been brought against the federal government since 2014 and that only two of those, including the Factor2 case, were filed against the USPTO.</span></font></p>
<p style="line-height:18.75pt"><span><b><font size="3" color="black" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:black;font-weight:bold">Full Story:
</span></font></b></span><span><font size="3" color="black" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:black"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__r.smartbrief.com_resp_rVkpCjqUzaDzBirVCignacCicNySjC-3Fformat-3Dmultipart&d=DwMFAg&c=WO-RGvefibhHBZq3fL85hQ&r=E-M4OQvQBo8UWqE1LwEiDR3PcWlfM0I-0jiI1c4ous0&m=cnzevWmVJhPw9pQm41fuI4VvX7QuDgrkcP3souHRtwPgnhSv5b50QJaQU2Wqt8a7&s=dw1RVImGmGLKcnn1Vf5dOfVc7JwBE_b6BnYgUScHcv4&e=" target="_blank"><span style="text-decoration:none">Bloomberg
Law</span></a></span></font></span><span><font size="3" color="#999999" face="Helvetica"><span style="font-size:11.5pt;font-family:Helvetica,sans-serif;color:rgb(153,153,153)"> (4/29)</span></font></span><font size="1" color="#999999" face="Helvetica"><span style="font-size:6pt;font-family:Helvetica,sans-serif;color:rgb(153,153,153)">
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