Cytek spectral flow cytometry 337 complaint received
USITC receipt of Cytek section 337 complaint on spectral flow cytometry systems, public interest clock, and duty/drawback note.
The U.S. International Trade Commission published a notice of receipt of complaint and solicitation of public interest comments for Certain Spectral Flow Cytometry Systems and Components Thereof, DN 3943, in the October 14, 2026 Federal Register (91 FR 65257-65258; FR Doc. 2026-20932). A complaint and 19 CFR 210.8(b) submission were filed on behalf of Cytek Biosciences, Inc. on October 8, 2026. This is receipt of a complaint only; the Commission has not instituted an investigation.
Cytek complaint DN 3943 vs Beckman Coulter (Brea, CA) and Beckman Coulter Biotechnology (Suzhou). Requested: limited exclusion order, cease and desist orders, and a Presidential-review bond. Not instituted yet.
What was filed
- Allegation: section 337 violations (19 U.S.C. 1337) in the importation, sale for importation, and sale after importation of certain spectral flow cytometry systems and components thereof.
- Respondents named: Beckman Coulter, Inc. of Brea, CA; and Beckman Coulter Biotechnology (Suzhou) Co., Ltd. of China.
- Requested relief: a limited exclusion order, cease and desist orders, and a bond during the 60-day Presidential review period under 19 U.S.C. 1337(j).
- IP detail: the Federal Register notice does not describe the patents or other intellectual property asserted.
- Contact: Lisa R. Barton, Secretary, (202) 205-2000.
Complaint filed Oct 8, 2026 on behalf of Cytek Biosciences, Inc. · 19 U.S.C. 1337
Public interest comments: 8 calendar days after publication · by our count Oct 22, 2026 · max 5 pages · Docket No. 3943 · EDIS
Complainant replies: 3 calendar days after submissions · by our count Oct 25, 2026 (Sunday) · last-day rule → by our count Mon Oct 26, 2026
Public interest clock
Public interest comments (limited to five pages, inclusive of attachments) are due by close of business eight calendar days after publication (by our count, October 22, 2026). Written submissions on other issues are due by 5:15 p.m. on the same day. Complainant replies are due three calendar days after submissions (by our count, October 25, 2026, a Sunday). The notice states that the 19 CFR 201.14(a) last-day rule still applies, so by our count replies fall on Monday, October 26, 2026. Comments should cite Docket No. 3943 and be filed electronically on EDIS.
The Commission asks commenters to address how the articles are used in the United States; public health, safety, or welfare concerns; like or directly competitive articles that could replace excluded products; replacement capacity within a commercially reasonable time; and impact on U.S. consumers.
Section 337 remedies are exclusion and cease and desist orders, not duties. An exclusion order (if one ever issues) would bar entry rather than impose a duty, so there is nothing to claim in drawback here. For an example of a later institution stage in a different 337 matter, see Vicor vertical power delivery 337-TA-1526 institution.
Action items
- Note the docket (DN 3943) if you buy, distribute, or service spectral flow cytometers and components.
- Consider public interest comments by the deadline (by our count October 22, 2026), filed on EDIS and citing Docket No. 3943.
- Inventory installed systems and service parts supply for research labs, hospitals, CROs, and distributors that rely on the named respondents' spectral platforms.
- Monitor for an institution notice; receipt of a complaint is not institution, and no investigation number has been assigned yet.
- FR Doc. 2026-20932 (91 FR 65257-65258): Cytek complaint DN 3943 on certain spectral flow cytometry systems and components. Filed Oct 8, 2026. Not instituted.
- Respondents: Beckman Coulter, Inc. (Brea, CA) and Beckman Coulter Biotechnology (Suzhou) Co., Ltd. Requested LEO, C&D orders, and a 1337(j) bond.
- Public interest comments due eight calendar days after Oct 14 publication (by our count Oct 22, 2026); complainant replies three calendar days later (by our count Oct 26, 2026 under the last-day rule).
- Section 337 remedies are exclusion and cease and desist, not duties; nothing to claim in drawback.
This article is for general information and is not legal or tax advice. Drawback eligibility depends on your specific facts, and final refunds are determined by CBP at liquidation. Consult a licensed customs broker or attorney for your situation.