Status
Petition Received RE: Denial of Reexamination Request
Requester
Requester Law Firm
Unknown
Requested By
Third Party
Patent Owner
P.O. Law Firm
Reexam History (67 events)
Apr 6, 2026RXC/SRCertificate of Service
Apr 6, 2026RPRDRX - Petition for Review of Reexam Denial
Mar 6, 2026MR327RX - Mail Miscellaneous Communication to Applicant
Mar 2, 2026RXOPPPETReexam - Opposition filed in response to petition
Mar 2, 2026RXC/SRCertificate of Service
Mar 2, 2026RXC/SRCertificate of Service
Mar 2, 2026RXA...Response after Non-Final Action
Feb 26, 2026RXOPPPETReexam - Opposition filed in response to petition
Feb 26, 2026RXC/SRCertificate of Service
Feb 12, 2026RXPET.Receipt of Petition in a Reexam
Feb 12, 2026RXPET.Receipt of Petition in a Reexam
Feb 12, 2026RXC/SRCertificate of Service
Feb 12, 2026RXC/SRCertificate of Service
Jan 21, 2026RXPTGPReexam Petition Decision - Granted - in-part
Jan 21, 2026MRTGPRX - Mail Petition Decision - Granted-in-part
Jan 16, 2026MREXNRX - Mail Examiner Interview Summary Record
Jan 13, 2026RXRQ/TRequest for Extension of Time
Jan 13, 2026RXC/SRCertificate of Service
Dec 1, 2025MRXFRRX - Mail Final Rejection
Nov 19, 2025RXRLFReExam Litigation Found
Nov 19, 2025RXLITSRReexam Litigation Search Conducted
Nov 10, 2025IDSCInformation Disclosure Statement considered
Oct 7, 2025WIDSInformation Disclosure Statement (IDS) Filed
Oct 7, 2025WIDSInformation Disclosure Statement (IDS) Filed
Oct 7, 2025RXLET.Miscellaneous Incoming Letter
Oct 7, 2025RXLET.Miscellaneous Incoming Letter
Oct 7, 2025RXIDS.Information Disclosure Statement Filed
Oct 7, 2025RXC/SRCertificate of Service
Oct 7, 2025RXAF/DAffidavit(s), Declaration(s) and/or Exhibit(s) Filed
Oct 7, 2025RXAF/DAffidavit(s), Declaration(s) and/or Exhibit(s) Filed
Oct 7, 2025RXA...Response after Non-Final Action
Sep 3, 2025MRXG.RX - Mail Extension of Time Period for Response Granted
Aug 29, 2025MREXNRX - Mail Examiner Interview Summary Record
Jul 8, 2025MR.NFRX - Mail Reexam Non-Final Action
Jun 19, 2025IDSCInformation Disclosure Statement considered
May 28, 2025RXFWDXDate Forwarded to Examiner
May 21, 2025WIDSInformation Disclosure Statement (IDS) Filed
May 21, 2025WIDSInformation Disclosure Statement (IDS) Filed
May 21, 2025WIDSInformation Disclosure Statement (IDS) Filed
May 21, 2025RXLET.Miscellaneous Incoming Letter
May 21, 2025RXIDS.Information Disclosure Statement Filed
May 21, 2025RXC/SRCertificate of Service
May 21, 2025RCCPRX - Concurrent Proceedings Notice
Mar 17, 2025MREXORX - Mail Ex Parte Request for Reexamination Granted
Mar 12, 2025RXPTGRReexam Petition Decision - Granted
Mar 12, 2025MRTGRRX - Mail Petition Decision - Granted
Feb 18, 2025RXPET.Receipt of Petition in a Reexam
Feb 18, 2025RXC/SRCertificate of Service
Feb 10, 2025RXRLFReExam Litigation Found
Feb 10, 2025RXLITSRReexam Litigation Search Conducted
Jan 24, 2025MRXNReexamination Formalities Notice Mailed
Jan 24, 2025MRXNReexamination Formalities Notice Mailed
Jan 24, 2025DOCKCase Docketed to Examiner in GAU
Jan 24, 2025COMPApplication Is Now Complete
Jan 23, 2025SMALApplicant Has Filed a Verified Statement of Small Entity Status in Compliance with 37 CFR 1.27
Jan 23, 2025RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Jan 23, 2025RXNREQFDNotice of reexamination request filing date
Jan 23, 2025RXNREQAUNotice of assignment of reexamination request
Jan 23, 2025FTFIFITF set to NO - revise initial setting
Jan 23, 2025BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
Jan 22, 2025RXTTLRPTTitle Report
Jan 22, 2025PRXRParalegal Reexam Review Complete
Jan 17, 2025RXOSUB.RReexamination requested by third party requester
Jan 17, 2025RXOSUBReceipt of Original Ex Parte Reexam Request
Jan 17, 2025RXNOCANotice of Court Action
Jan 17, 2025RXC/SRCertificate of Service
Jan 17, 2025BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
Prosecution, PTAB & CAFC
PTAB Proceedings (IPR, PGR, CBM, DER)
IPR2019-00852IPR — Final Written Decision
Petitioner
Nitro Fluids, L.L.C.
Petition Filed
Mar 20, 2019
Institution
Sep 9, 2019
Decision
Aug 23, 2022
Terminated
Sep 2, 2020
Federal Circuit (CAFC)
None found
Terminal Disclaimer
Filed — ApprovedSep 20, 2017
Prosecution History
| Date | Code | Description |
|---|---|---|
| Sep 20, 2017 | P574 | PARALEGAL OR ELECTRONIC TERMINAL DISCLAIMER APPROVED |
| Sep 20, 2017 | DIST | Terminal Disclaimer Filed |
Maintenance Fees
Grant
Apr 3, 2018
3.5-yr
Oct 3, 2021
Paid Sep 15, 2021
7.5-yr
Oct 3, 2025
Paid Sep 17, 2025
11.5-yr
Oct 3, 2029
Expiry
Feb 1, 2037
Entity Status
Large Entity
Expires
Feb 1, 2037 (10.9 yr remaining)
Assignments
None found