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Assignor Estoppel: What did the assignor “represent” as his invention?

Patently-O

Minerva Surgical, Inc. Hologic, Inc. , Hologic, Inc. Minerva Surgical, Inc. , The Truckai application was filed in 1998 and that same year Truckai signed an assignment of rights to start-up company Novacept. Later Novacept was purchased for $300m by Hologic. Minerva , 19-2054 (Fed.

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Narrowed Assignor Estoppel Still Bars Minerva Surgical from Challenging Validity

Patently-O

Minerva Surgical, Inc. Hologic, Inc. , Hologic, Inc. Minerva Surgical, Inc. , Later, the patentee obtained a patent covering the invention without the permeable member and then sued the assignor who had formed a competing company. 2298 (2021). ” Id. .” 19-2054, — F.4th

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Supreme Court to Decide Fate of Assignor Estoppel

IP Intelligence

In Hologic, Inc. Minerva Surgical, Inc. Csaba Truckai assigned his interest in the application to which the patent-in-suit claims priority (as well as all continuation applications) to NovaCept, Inc., a company that he co-founded. Cytyc was later acquired by Hologic. Ambico, Inc. EVE-USA, Inc.

Patent 52
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Fed. Circ. Told Inventor Limits Don't Bar Validity Challenge

IP Law 360

Surgical device company Minerva has told the Federal Circuit that in light of the U.S. Supreme Court narrowing when a doctrine preventing inventors from challenging their own patents can be invoked, a Hologic Inc. patent covering an endometrial treatment must be invalidated.

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Supreme Court Upholds, but Limits, Patent Infringement Defense of “Assignor Estoppel”

JD Supra Law

Supreme Court recently decided a case resolving a patent dispute between two medical device companies, Hologic, Inc. and Minerva Surgical. The opinion was closely watched because it raised the question of whether an inventor who has assigned a patent is legally prevented from later attacking the validity of that same patent —.

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The Supreme Court Upholds the Doctrine of Assignor Estoppel While Clarifying Its Scope

Bio Law Blog

On June 29, 2021, the Supreme Court, in Minerva Surgical, Inc. Hologic Inc., Truckai had filed a patent application, and assigned it along with future continuation applications, to his company Novacept, which was eventually acquired by Hologic. Hologic then sued Minerva for infringement of the continuation patent.

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Muzzling Transferors of Intellectual Property: Assignor Estoppel in Canada

IPilogue

Supreme Court recently decided that the doctrine of assignor estoppel—the judge-made law that prevents an assignor, if sued for IP infringement by the assignee, from contesting the title or validity of the IP it transferred—applies to the assignments of patents in Minerva Surgical, Inc. v Hologic, Inc., 594 US (2021).