Haemonetics Corporation v. Terumo BCT, Inc.

District Court, D. Colorado·Decided August 7, 2026·No. 1:25-cv-01409·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLORADO

Civil Action No. 1:25-cv-01409-RMR-SBP

HAEMONETICS CORPORATION,

Plaintiff,

v.

TERUMO BCT, INC.,

Defendant.

REPORT AND RECOMMENDATION OF UNITED STATES MAGISTRATE JUDGE

Susan Prose, United States Magistrate Judge

This matter is now before the court on Defendant Terumo BCT, Inc.’s Partial Motion to Dismiss (ECF No. 58) (the “Motion” or “Motion to Dismiss”). Plaintiff Haemonetics Corporation responded to the Motion (ECF No. 63),1 and Terumo filed a reply (ECF No. 64). The Motion is referred to the undersigned United States Magistrate Judge for a recommendation pursuant to 28 U.S.C. § 636(b)(l)(A) and Federal Rule of Civil Procedure 72(b). See ECF Nos. 33 (Order Referring Case), 59 (Order Referring Motion). The court has carefully considered the briefing on the Motion and the applicable law, and concludes that oral argument would not materially assist in the disposition of the Motion. The court now respectfully RECOMMENDS that the Motion be DENIED for the reasons explained below.

1 Haemonetics also filed a Notice of Errata (ECF No. 91). BACKGROUND

Haemonetics is a global corporation that develops and manufactures medical equipment, “including end-to-end plasma collection technologies to optimize operations for plasma centers.” Second Amended Complaint, ECF No. 48 ¶ 13 (“Complaint”). Haemonetics holds patents for some of these technologies, including the patents at issue in this lawsuit. Id. ¶ 22. Specifically, this case involves eight patents (collectively, the “Asserted Patents” or “Patents”):2 the ’652 Patent, the ’416 Patent, ’926 Patent, the ’934 Patent, the ’124 Patent, the ’916 Patent, the ’873 Patent, and the ’204 Patent. ECF No. 48 ¶ 1. The following facts are drawn from Haemonetics’ Complaint and the attached exhibits. The Asserted Patents describe a “blood processing system that collects plasma.” Id. ¶ 23. The plasma collection process is known as plasma apheresis. See ECF No. 48-2 at 10. “Apheresis is a procedure in which individual blood components can be separated and collected

from whole blood temporarily withdrawn from a subject.” Id. Per Haemonetics, the Patents address shortcomings with prior art plasma apheresis systems, which rely on an imprecise set of guidelines promulgated by the United States Food and Drug Association (“FDA”). ECF No. 48 ¶¶ 20-22. Those guidelines, known as the “simplified nomogram,” limit the amount of blood plasma that can be collected from a donor based on three categories of donor weight. Id. ¶ 20; see also Volume Limits – Automated Collection of Source Plasma (11/4/92) (hereafter, “FDA Guidance”), https://www.fda.gov/media/70951/download (Nov. 4, 1992); Sierra Club v. U.S. Env't Prot. Agency, 964 F.3d 882, 893 (10th Cir. 2020)

2 Initially, the case involved nine patents. See ECF No. 48 ¶ 1. However, Haemonetics has since withdrawn its claim for infringement of the ’474 Patent. ECF No. 91. (taking judicial notice of information on government website). During the plasma apheresis process, anticoagulant is added to the whole blood prior to feeding the blood into a blood

separator, which then separates the plasma from other components. ECF No. 48-3 at 1, 7-8. However, “the osmolarity of the red blood cells prevents the anticoagulant introduced into the whole blood from entering/remaining with the red blood cells”; as a result, the anticoagulant accrues in the collection container along with the plasma, yielding the “total collection volume”—the total amount of collected plasma and any accrued anticoagulant. Id. at 1:21-53, 7:51-62. For each of the three weight classes listed in the FDA Guidance, the FDA specifies a single plasma volume limit and total collection volume limit. ECF No. 48 ¶ 20. Prior art apheresis systems are thus limited to the target collection volume prescribed by the FDA and cannot “tailor the amount of plasma that c[an] be safely taken from an individual donor.” See id. Similarly, prior art apheresis systems “only focus[] on the full collection volume of a donation

procedure—which includes both anticoagulant and blood plasma—instead of homing in on the actual blood plasma-only value.” Id. Without knowledge of the actual amount of plasma in the collection container at any given moment, prior art systems must stop the apheresis process once the collection volume reaches the FDA limit, even if the actual amount of collected plasma is still below what can safely be collected from the donor. See id. The Patents claim new apheresis systems that “utilize an individual donor’s actual height, weight, and hematocrit to calculate the correct volume of plasma to be collected,” within guidelines approved by the FDA. Id. ¶ 21. Further, the systems are “configured to calculate the volume of actual plasma within the collection container, instead of utilizing the plasma and

anticoagulant volume as a base for determining when to stop the collection.” Id. The result is “an average increase in yield of 18-26 mL of plasma per donation” over systems without the technology. Id.

Relevant to the instant Motion are several individual claims from the Patents. These claims include the following independent claims: Claim 8 of the ’926 Patent, Claim 23 of the ’934, Claim 7 of the ’916 Patent, Claim 13 of the ’873 Patent, and Claim 23 of the ’204 Patent, and the following dependent claims: Claims 17, 18, 19, 20, and 21 of the ’873 Patent, and Claims 29 and 30 of the ’204 Patent. ECF No. 58 at 10-12; see also ECF No. 48 ¶¶ 165-207, 260-370. Claim 8 of the ’926 Patent is typical of the independent claims: A system for collecting plasma comprising:

a venous-access device for drawing whole blood from a donor and returning blood components to the donor;

a blood component separation device for separating the drawn blood into a plasma component and a second blood component, the blood component separation device having an outlet and being configured to send the plasma component to a plasma container;

a blood draw line fluidly connected to the venous-access device and configured to transport drawn whole blood to the blood component separation device, the flow through the blood draw line being controlled by a blood draw pump; an anticoagulant line connected to an anticoagulant source, the anticoagulant line configured to introduce anticoagulant into the drawn whole blood; and

a controller configured to control the operation of the blood component separation device, the controller configured to calculate (1) a volume of anticoagulant to be collected with plasma component in the plasma container, the volume of anticoagulant to be collected with the plasma component based, at least in part on the hematocrit of the donor, (2) a target volume of pure plasma to collect in the plasma container based, at least in part, on the weight of the donor, and (3) a target collection volume based, at least in part, on the calculated volume of anticoagulant and the calculated volume of pure plasma, the system configured to stop the blood draw pump when the target collection volume is collected within the plasma container.

ECF No. 48-3 at 11:20-49. Claim 20 of the ’873 Patent is typical of the dependent claims: A system according to claim 13, further comprising:

a plasma collection container weight sensor configured to monitor the volume of plasma component collected within the plasma collection container.

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Haemonetics Corporation v. Terumo BCT, Inc., (D. Colo. 2026).

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