Trudell Medical International Inc. v. D R Burton Healthcare, LLC

127 F.4th 1340
Court of Appeals for the Federal Circuit·Decided February 7, 2025·No. 23-1777·Published·Cited by 3 cases

Opinion

United States Court of Appeals for the Federal Circuit

TRUDELL MEDICAL INTERNATIONAL INC., Plaintiff-Appellant

v.

D R BURTON HEALTHCARE, LLC, Defendant/Counter-Claimant-Cross-Appellant

2023-1777, 2023-1779

Appeals from the United States District Court for the Eastern District of North Carolina in No. 4:18-cv-00009- BO, Judge Terrence William Boyle.

Decided: February 7, 2025

LAURA A. LYDIGSEN, Crowell & Moring, LLP, Chicago, IL, argued for plaintiff-appellant. Also represented by WIL- LIAM HARRY FRANKEL, JUDY HE, DAVID LINDNER.

ALBERT P. ALLAN, Allan Law Firm, PLLC, Charlotte, NC, argued for defendant/counter-claimant-cross-appellant . Also represented by WILLIAM ROBERT TERPENING, Terpening Law PLLC, Charlotte, NC.

Before MOORE, Chief Judge, CHEN and STOLL, Circuit Judges.

2 TRUDELL MEDICAL INTERNATIONAL INC. v.

D R BURTON HEALTHCARE, LLC

MOORE, Chief Judge.

Trudell Medical International Inc. (Trudell) appeals the United States District Court for the Eastern District of North Carolina’s decision to allow D R Burton Healthcare, LLC (D R Burton) to present infringement testimony by Dr. John Collins at trial. Trudell also appeals the denial of a motion for judgment as a matter of law (JMOL) on infringement of claims 1–7, 9, and 18 of U.S. Patent No. 9,808,588 or, in the alternative, a new trial on infringement of claims 1–18 and 20–26 of the ’588 patent (the Asserted Claims). See Trudell Med. Int’l v. D R Burton Healthcare LLC, No. 4:18-cv-00009, 2023 WL 2315391 (E.D.N.C. Mar. 1, 2023) (Post-Trial Order). We reverse the district court’s admission of Dr. Collins’ testimony and its denial of a new trial on infringement, and we remand the case to be reassigned. 1

1 D R Burton cross-appealed the jury’s verdict that the Asserted Claims of the ’588 patent were not shown to be invalid. We need not reach this issue, however, as D R Burton withdrew the cross-appeal at oral argument in light of its failure to file a renewed motion for JMOL pursuant to Federal Rule of Civil Procedure 50(b). Oral Arg. at 27:20–28:09, available at https://oralarguments.cafc.us courts.gov/default.aspx?fl=23-1777_10092024.mp3; A Helping Hand, LLC v. Baltimore Cnty., Md., 515 F.3d 356, 369–70 (4th Cir. 2008) (“a party’s failure to file a postverdict motion under Rule 50(b) leaves an appellate court without power to direct the District Court to enter judgment contrary to the one it had permitted to stand” (quoting Unitherm Food Sys., Inc. v. Swift-Eckrich, Inc., 546 U.S. 394, 400–01 (2006)) (internal quotation marks omitted ))).

TRUDELL MEDICAL INTERNATIONAL INC. v. 3 D R BURTON HEALTHCARE, LLC

BACKGROUND

Trudell owns the ’588 patent, which relates to portable devices for performing oscillatory positive expiratory pressure (OPEP) therapy. ’588 patent at 1:16–18, 50–51. OPEP therapy loosens secretions from airways to improve respiration. See id. at 1:22–46. The three independent claims read:

1. A respiratory treatment device comprising: an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow path defined between the inlet and the outlet; a blocking segment configured to rotate relative to the opening between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; and, a vane configured to rotate the blocking segment between the closed position and the open position in response to the flow of air through the opening; wherein a size of a blocking surface of the blocking segment is equal to or greater than a size of the opening. 9. A respiratory treatment device comprising: an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow path defined between the inlet and the outlet, the opening having a generally oblong cross-sectional shape comprising a shorter first dimension and an 4 TRUDELL MEDICAL INTERNATIONAL INC. v.

D R BURTON HEALTHCARE, LLC

elongated second dimension perpendicular to the first dimension; and, a blocking segment configured to translate relative to the opening along the shorter first dimension between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; wherein a size of a blocking surface of the blocking segment is equal to or greater than a size of the opening. 18. A respiratory treatment device comprising: an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow path defined between the inlet and the outlet, and, a blocking segment configured to translate relative to the opening between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; wherein a side profile of the blocking segment is shaped to mate with a side profile of the opening, when the blocking segment is in the closed position; and, wherein a size of a blocking surface of the blocking segment is equal to or greater than a size of the opening.

Id. at 12:12–26, 49–63, 13:25–14:5 (emphases added). D R Burton sells OPEP devices, including the vPEP®, vPEP® HC, iPEP®, PocketPEP®, and PocketPEP® Advantage products (collectively, the Accused Products).

TRUDELL MEDICAL INTERNATIONAL INC. v. 5 D R BURTON HEALTHCARE, LLC

On January 29, 2018, Trudell sued D R Burton for infringement of certain claims of the ’588 patent. After a claim construction hearing in October 2020, the case was reassigned in January 2021 to United States District Court Judge Terrence Boyle. Judge Boyle assigned a new magistrate judge, who issued a Memorandum and Recommendation (M&R) regarding claim construction. J.A. 23–63. The district court adopted the M&R in its entirety.

On August 26, 2022, the district court amended the case schedule. At that time, fact discovery had not closed and expert discovery had not yet commenced. J.A. 1740 at 24:20–24. The district court set the close of all discovery for September 30, 2022 and set trial to start on November 7, 2022. Before the September 30 discovery deadline, Trudell submitted expert reports on infringement and damages. On October 21, 2022, D R Burton filed a seven- page declaration from Dr. Collins in support of its opposition to Trudell’s motion for summary judgment on infringement . The district court denied Trudell’s summary judgment motion.

Leading up to trial, Trudell filed motions in limine seeking to exclude testimony from Dr. Collins on invalidity and noninfringement and to exclude testimony from any D R Burton witnesses on claim construction. The district court did not rule on Trudell’s motion in limine until the pre-trial conference on Friday, November 4, 2022. At the pre-trial conference the district court initially denied the motion in limine, J.A. 2035 at 3:1–2, then on Monday, November 7, 2022—the first day of trial—the district court reversed itself and granted the motion in limine after Trudell filed a motion for reconsideration, J.A. 2073 at 2:3– 12. The district court then doubled back moments later, “reserv[ing] a ruling on [i]t until the end of plaintiff’s case.” J.A. 2079 at 8:25–9:2. On the third and final day of trial, after Trudell presented its case, but before lunch, the district court ruled that Dr. Collins would testify after the lunch break. J.A. 2476–77 at 36:24–37:15.

6 TRUDELL MEDICAL INTERNATIONAL INC. v.

D R BURTON HEALTHCARE, LLC

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