Minerva Surgical, Inc. v. Hologic, Inc.

District Court, D. Delaware·Decided July 20, 2021·No. 1:18-cv-00217·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE

MINERVA SURGICAL, INC.

Plaintiff and C.A. NO. 18-00217-JFB-SRF Counterdefendant,

vs. MEMORANDUM AND ORDER

HOLOGIC, INC. and CYTYC SURGICAL PRODUCTS, LLC,

Defendants and Counterclaimants.

This matter is before the Court on the parties’ motions to preclude expert testimony under Daubert v. Merrell Dow Pharms., Inc., 509 U.S. 579, 597 (1993). Defendants Cytyc Surgical Products, LLC, and Hologic, Inc. (collectively, “Hologic”) moves to exclude certain opinions and testimony of Dr. Paul L. Briant (D.I. 217); Blake Inglish (D.I. 219), and Dr. Robert Tucker (D.I. 221). Plaintiff Minerva Surgical, LLC (“Minerva”) moves to preclude certain opinions of James E. Pampinella (D.I. 196 ); and Karl R. Leinsing (D.I. 202). This is an action for patent infringement brought pursuant to 35 U.S.C. § 271 et seq. I. FACTS A. Background The facts are set out in earlier orders and will be repeated herein only as necessary to this opinion. D.I. 80, D.I. 130, D.I. 194, Orders. Plaintiff Minerva and defendant Hologic are competing suppliers of endometrial ablation devices. D.I. 34-4 at 1; D.I. 80, Order. 1 These devices treat abnormally heavy menstrual bleeding by destroying the uterine lining. D.I. 80, Order at 1. Both parties’ devices—Hologic’s ADVANCED and Minerva’s Endometrial Ablation System (“Minerva EAS”) are designed to insert an expandable and contractible frame into the patient’s uterus through the cervical canal. Id. The frame consists of “inner” and “outer” elements (also called flexures or struts in the parties’ papers) that expand to bring a membrane into contact with the uterine cavity. Id. Once in place, the membrane is used to apply energy sufficient to destroy the uterine lining. Id.

The Minerva EAS generates heat by ionizing argon gas, while ADVANCED and its predecessor, the NovaSure CLASSIC (“CLASSIC”), use radio-frequency energy. Id. In February 2017, Hologic began U.S. distribution of a new device called the NovaSure ADVANCED (“ADVANCED”). Id. Minerva alleges that Hologic infringes several claims of its U.S. Patent No. 9,186,208 (“the ’208 patent”) by selling, and offering for sale, the NovaSure ADVANCED uterine ablation device. Almost from the outset of this case, the parties have agreed that Minerva’s infringement case turns on Claim 13 of the ’208 patent. Id. at 2. Claim 13 describes, in relevant part, a system for endometrial ablation with a frame “wherein the inner and outer

elements have substantially dissimilar material properties [SDMP].” Id. (quoting D.I. 35- 3, Ex. 1, ’208 patent at 22). In proceedings on Minerva’s motion for preliminary injunction, the parties initially agreed that SMDP should be construed to mean that “the inner and outer frame elements have different thickness or width and different composition or treatment.” D.I. 80, Order at 8. Minerva stated that interpretation was “the most natural reading of the term as used in the ’208 patent.” Id. Hologic accepted Minerva’s construction for purposes of the preliminary injunction motion. Id. at 3; see also D.I. 51- 4, Hologic Opposition Brief at 5. Under that construction, the parties agreed that the frame elements should satisfy both requirements, that is, the inner and outer frame elements should have different thickness or width, and the frame elements should also have different composition or treatment. D.I. 80, Order at 3. The parties also agreed that ADVANCED’s inner and outer elements have different thickness or width and have the same composition. Id. As such, Minerva’s infringement claim at that time turned on whether the ADVANCED’s inner and outer elements underwent different “treatments.”

D.I. 80, Order at 3. Minerva later proffered a new construction of SDMP: “different thickness or width and different composition or treatment that provide different spring characteristics to influence the expandable planar triangular shape of the energy delivery surface.” Id. On the basis of that revised proposed construction, Minerva argued that while the previous iteration of Hologic’s uterine ablation device, the CLASSIC, had inner and outer elements that did not possess “different spring characteristics to influence the expandable planar triangular shape of the energy delivery surface,” the ADVANCED’s inner and outer elements did. Id.

In denying Minerva’s motion for a preliminary injunction, the Court rejected that construction, finding, inter alia, that Minerva’s proposal breached the basic principles of claim construction by importing a limitation into the claim that was not required by the specification, i.e., that the inner and outer elements should possess “different spring characteristics to influence the expandable planar triangular shape of the energy delivery surface.” Id. at 4. Further, the Court considered and rejected Minerva’s argument that a person of ordinary skill in the art would know that processes such as a photochemical etching procedure amounted to a “treatment” under the patent because that sort of procedure could “change material properties by merely removing material from the surface of a physical thing[,]” noting “that spring characteristics are ‘component-level’ properties that depend not only on the material’s intrinsic properties but also on the geometry of the component.”1 Id. at 6. The Court concluded that The ’208 patent specification only describes embodiments where the inner and outer components possess different spring characteristics by virtue of being constructed from dissimilar materials. Dkt. No. 35-3 [the ’208 patent] at 19:48. But the converse does not follow—those examples do not show that two components have “substantially different material properties” whenever they have different spring characteristics. As a whole, the record does not support a finding that “material properties” includes spring characteristics. Id. at 6-7. Although the Court stopped short of finding that Minerva’s infringement claim was a “completely lost cause,” it found Minerva had not shown a likelihood of success on the merits and denied injunctive relief. Id. at 8. Minerva again pursued its failed argument during claim construction proceedings under Markman v. Westview Instruments, Inc., 52 F.3d 967, 977-78 (Fed. Cir. 1995), aff'd, 517 U.S. 370, 388-90 (1996)), in front of the Magistrate Judge. Minerva again proposed construing the term “SDMP” as "different thickness or width and different composition or treatment that provide different spring characteristics to influence the expandable planar triangular shape of the energy delivery surface." D.I. 130, Report and Recommendation (“R&R”) at 5. The Magistrate Judge rejected Hologic’s argument that the word

1 The parties agree a person of ordinary skill in the art in this case is “someone with the equivalent of a bachelor’s degree in biomedical engineering, electrical engineering, mechanical engineering, or a related field and at least two years of work experience developing or implementing electrosurgical devices.” D.I. 80, Order at 5 n.1. “substantially” rendered the term indefinite and recommended that the Court construe the SMDP language to mean “the inner and outer frame elements have different thickness and different composition.” Id. at 5-6.

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Minerva Surgical, Inc. v. Hologic, Inc., (D. Del. 2021).

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