Cytek Biosciences, Inc. - PGR2025-00088

Explore the PTAB proceeding PGR2025-00088 filed by Cytek Biosciences, Inc. on Sep 23, 2025. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Case Details

Proceeding Number
PGR2025-00088
Filing Date
Sep 23, 2025
Petitioner
Cytek Biosciences, Inc.
Status
Petition filed
Respondent Application Number
18823596
Respondent Tech Center
2800
Respondent Patent Number
12174107

Proceeding Decision New

Decision pending - set alert to receive updates

Proceeding Documents

The table below shows documents filed in the case, listing each document name, filing date, document type, and filing party. Tracking these filings indicates the activity of the parties involved in the case, and the types of documents filed can provide insights into the legal strategies being employed.

Document NameFiling DateCategoryFiling Party

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U.S. Patent No. 12,174,107 B2 to Yong Qin Chen (“’107 patent”)

Sep 23, 2025EXHIBITPETITIONER

Prosecution History of U.S. Patent No. 12,174,107 B2

Sep 23, 2025EXHIBITPETITIONER

Carter & Ormerod, Ch 1, Introduction to the Principles of flow cytometry

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 6,683,314 B2 to Clifford A. Oostman, Jr. et al. ("Oostman")

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 5,317,162 to Bertram G. Pinsky et al. ("Pinsky")

Sep 23, 2025EXHIBITPETITIONER

Excerpts of Howard M. Shapiro, Practical Flow Cytometry ("Shapiro")

Sep 23, 2025EXHIBITPETITIONER

WO 2010/101623 A1 to Michael Thomas (“Thomas”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 8,284,402 B2 to Erich Frazier et al. (“Frazier”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 4,244,045 to Kiyoshi Nosu et al. (“Nosu”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 8,537,468 B1 to Xuan Wang et al. (“Wang”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 6,198,864 B1 to Brian E. Lemoff et al. (“Lemoff”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 7,212,343 B1 to Chun He et al. (“He”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 5,835,517 to Vijaysekhar Jayaraman et al. (“Jayaraman”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 6,201,908 B1 to Eric B. Grann (“Grann”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 6,542,306 B2 to Timothy D. Goodman (“Goodman”)

Sep 23, 2025EXHIBITPETITIONER

Listing of Challenged Claims

Sep 23, 2025EXHIBITPETITIONER

Joint Claim Construction Chart filed in Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

Plntf’s Discl of Asserted Claims and Infringement Contentions [Red. Ver.]

Sep 23, 2025EXHIBITPETITIONER

Definition of Mirror from Concise Oxford English Dictionary

Sep 23, 2025EXHIBITPETITIONER

Excerpts of Course 1 Funds of Light and Lasers, Optics and Photonics Series

Sep 23, 2025EXHIBITPETITIONER

Semat & Katz, Ch 38, Mirrors and Lenses, Physics

Sep 23, 2025EXHIBITPETITIONER

Wasserman, Geometrical optics and ray tracing, Course Wiki

Sep 23, 2025EXHIBITPETITIONER

Complaint filed in Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

Summons in a Civil Action to Cytek, filed in Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

Stip and Order Amending Scheduling Order filed in Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

Excerpts of the Prosecution history of U.S. Patent No. 9,746,412

Sep 23, 2025EXHIBITPETITIONER

Diamond, Ch 8: Quality Control Guidelines for Research Flow Cytometry

Sep 23, 2025EXHIBITPETITIONER

Doornbos, WBC Differentiation Using a Solid State Flow Cytometer

Sep 23, 2025EXHIBITPETITIONER

SensL SPMMini High Gain APD

Sep 23, 2025EXHIBITPETITIONER

Menlo Systems APD210/310 High Sensitivity Detector Unit

Sep 23, 2025EXHIBITPETITIONER

Thorlabs.com – High-Sensitivity Avalanche Photodetectors website Overview

Sep 23, 2025EXHIBITPETITIONER

World Patent No. WO 94/29695 to Oddbjørn Gjelsnes ("Gjelsnes")

Sep 23, 2025EXHIBITPETITIONER

Stewart et al., Flow Cytometer in the Infrared: Inexpensive Modification...

Sep 23, 2025EXHIBITPETITIONER

Lawrence et al., A 16-channel avalanche photodiode detector array for...

Sep 23, 2025EXHIBITPETITIONER

Lawrence et al, A Comparison of Avalanche Photodiode and Photomultiplier...

Sep 23, 2025EXHIBITPETITIONER

Zhao et al, High gain avalanche photodiode (APD) arrays in flow cytometer..

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 8,188,438 B2 to Dongqing Li ("Li-438")

Sep 23, 2025EXHIBITPETITIONER

Canadian Patent No. 2 771 324 to Paul Patt ("Patt-324")

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 7,580,120 B2 to Yuichi Hamada et al. ("Hamada")

Sep 23, 2025EXHIBITPETITIONER

World Patent No. 98/59233 to Van S. Chandler ("Chandler-233")

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 7,523,637 B2 to Wayne D. Roth et al ("Roth-637")

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 7,505,131 B2 to Wayne D. Roth ("Roth-131")

Sep 23, 2025EXHIBITPETITIONER

US Pat Appl Publ No 2008/0305481 A1 to Douglas F Whitman et al ("Whitman")

Sep 23, 2025EXHIBITPETITIONER

US Pat Appl Pub No 2007/0269345 A1, Adam R. Schilffarth ("Schilffarth-345")

Sep 23, 2025EXHIBITPETITIONER

US Pat Appl Pub No 2007/0207513 A1 to Keld Sorensen et al ("Sorensen")

Sep 23, 2025EXHIBITPETITIONER

US Pat Appl Pub No 2009/0071225 A1, Adam R. Schilffarth ("Schilffarth-225")

Sep 23, 2025EXHIBITPETITIONER

US Pat Appl Pub No 2009/0237658 A1 to Edward Calvin et al ("Calvin")

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 6,139,800 to Van S. Chandler ("Chandler")

Sep 23, 2025EXHIBITPETITIONER

Luminex 100™ IS User Manual Version 2.3

Sep 23, 2025EXHIBITPETITIONER

Luminex FlexMap 3D® User Manual

Sep 23, 2025EXHIBITPETITIONER

BD Biosciences Immunocytometry Systems Tech Specifications BD FACSArray

Sep 23, 2025EXHIBITPETITIONER

Archived website page for Hamamatsu NIR High Sensitivity Type products

Sep 23, 2025EXHIBITPETITIONER

Archived website page for Hamamatsu Short Wavelength Type products

Sep 23, 2025EXHIBITPETITIONER

Hamamatsu Si APD S5343 to S5345, S9073 to S9075, Short wavelength type APD

Sep 23, 2025EXHIBITPETITIONER

Hamamatsu Si APD S8890 series, Long wavelength type APD

Sep 23, 2025EXHIBITPETITIONER

Hamamatsu Si APD S2381 to S2385, S5139, S8611, S3884, S4315 series, Low...

Sep 23, 2025EXHIBITPETITIONER

Hamamatsu Products by Division

Sep 23, 2025EXHIBITPETITIONER

First Sensor APD Data Sheet Part Description AD800-11 to Order # 500970

Sep 23, 2025EXHIBITPETITIONER

Thorlabs, Collimated Light's Non-Zero Beam Divergence, Does collimated...

Sep 23, 2025EXHIBITPETITIONER

Edmund Optics, Considerations in Collimation

Sep 23, 2025EXHIBITPETITIONER

Affidavit of Mina Ching

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 9,746,412 B2 to Yong Qin Chen ("'412")

Sep 23, 2025EXHIBITPETITIONER

Prosecution History of PCT/US2013/043453 (the “PCT App.”)

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 11,255,772 B2 to Yong Qin Chen (“’772”)

Sep 23, 2025EXHIBITPETITIONER

Decl of Dr. David Schaafsma, PhD ISO Beckman Coulter’s Opening CC Brief

Sep 23, 2025EXHIBITPETITIONER

How Gas-Ion Lasers Work, Lexel Laser

Sep 23, 2025EXHIBITPETITIONER

Barnes, Copper at the Cutting Edge: The Copper Vapor Laser

Sep 23, 2025EXHIBITPETITIONER

Argon Lasers, Remanufactured Air-Cooled Argon and Argon/Krypton Lasers

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 12,174,106 B2 to Yong Qin Chen (“’106 patent”)

Sep 23, 2025EXHIBITPETITIONER

Excerpts from Newport Catalog, incl Focusing and Collimating & Optics Gloss

Sep 23, 2025EXHIBITPETITIONER

Newport Catalog, Precision Laser & Optics Products

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 10,330,582 B2 to Yong Qin Chen (“’582 patent”)

Sep 23, 2025EXHIBITPETITIONER

Néron, Application Note Fiber Coupling Efficiency Calculation, Doric Lenses

Sep 23, 2025EXHIBITPETITIONER

Thorlabs, Single Mode Fiber

Sep 23, 2025EXHIBITPETITIONER

Thorlabs, 0.22 NA Silica Core, Glass Clad Multimode Optical Fiber, Step Ind

Sep 23, 2025EXHIBITPETITIONER

Thorlabs, 0.39 NA TECS-Clad Multimode Optical Fiber, Step Index

Sep 23, 2025EXHIBITPETITIONER

Beckman Coulter, Spectral Flow Cytometry: A Detailed Scientific Overview

Sep 23, 2025EXHIBITPETITIONER

Thermo Fisher Scientific, Electronics of a Flow Cytometer

Sep 23, 2025EXHIBITPETITIONER

Ortolani, Chapter 22 Non-Conventional Flow Cytometry

Sep 23, 2025EXHIBITPETITIONER

Beckman Coulter Life Sciences Launches Industry-First Modular Spectral...

Sep 23, 2025EXHIBITPETITIONER

Beckman Coulter, CytoFLEX mosaic Spectral Detection Module

Sep 23, 2025EXHIBITPETITIONER

U.S. Patent No. 7,280,204 B2 to Joseph Paul Robinson et al. (“Robinson”)

Sep 23, 2025EXHIBITPETITIONER

Shapiro and Hercher, Flow Cytometers Using Optical Waveguides in Place...

Sep 23, 2025EXHIBITPETITIONER

Markman Hearing Transcript from Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

Newport, Technical Note: Fiber Optic Coupling

Sep 23, 2025EXHIBITPETITIONER

Markman Hearing Transcript from Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

First Amended Complaint filed in Beckman Coulter v. Cytek

Sep 23, 2025EXHIBITPETITIONER

U.S. Provisional Application 61/911,859 to Yong Qin Chen

Sep 23, 2025EXHIBITPETITIONER

Notice: Power of Attorney

Sep 23, 2025PAPERPETITIONER

Declaration of Fedor A. Ilkov, Ph.D.

Sep 23, 2025EXHIBITPETITIONER

Petition: as filed

Sep 23, 2025PAPERPETITIONER