90/016,281CORROSION CONTROL FOR WATER SYSTEMS USING PASSIVATORS AND A HYDROXYCARBOXYLIC ACID12,601,064Open
Status
Reexam Terminated - Notice of Intent to Issue a Reexamination Certificate Mailed
Filed
May 14, 2026
Pre-Order Paper
None filed
Last Updated
Oct 15, 2026
Examiner
Art Unit
Requester
Requester Law Firm
Not named in the record
Requested By
Third Party
Patent Owner(via USPTO assignment records)
Patent Owner Law Firm
Owner hasn't filed yet
Reexam History (19 events)
Oct 15, 2026MRNRCRX - Mail Notice of Intent to Issue a Reexam Certificate
Sep 22, 2026RXLITSRReexam Litigation Search Conducted
Sep 9, 2026RXFWDXDate Forwarded to Examiner
Jul 6, 2026MREXORX - Mail Ex Parte Request for Reexamination Granted
May 26, 2026COMPApplication Is Now Complete
May 26, 2026MRXNReexamination Formalities Notice Mailed
May 26, 2026DOCKCase Docketed to Examiner in GAU
May 26, 2026MRXNReexamination Formalities Notice Mailed
May 22, 2026RXPCOMCompletion of Preprocessing - Released to Assigned GAU
May 22, 2026RXNREQFDNotice of reexamination request filing date
May 22, 2026RXNREQAUNotice of assignment of reexamination request
May 22, 2026RXTTLRPTTitle Report
May 21, 2026PRXRParalegal Reexam Review Complete
May 19, 2026RXLITSRReexam Litigation Search Conducted
May 19, 2026FTFSFITF set to YES - revise initial setting
May 14, 2026RXOSUBReceipt of Original Ex Parte Reexam Request
May 14, 2026BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
May 14, 2026RXC/SRCertificate of Service
May 14, 2026RXOSUB.RReexamination requested by third party requester
Prosecution, PTAB & CAFC
PTAB Proceedings (IPR, PGR, CBM, DER)
None found
Federal Circuit (CAFC)
None found
Terminal Disclaimer
None found
Prosecution History
None found
Maintenance Fees
Grant
Apr 14, 2026
3.5-yr
Oct 14, 2029
7.5-yr
Oct 14, 2033
11.5-yr
Oct 14, 2037
Expiry
Jun 19, 2044
Entity Status
Large Entity
Expires
Jun 19, 2044 (18.1 yr remaining)
Term Adjustment
+390 days (~1.1 yr)
Assignments
AssignmentReel/Frame: 063774/0325Recorded: May 26, 2023
From
SANTANU BANERJEEInventor
May 23, 2023
DEANN C. GUYInventor
May 19, 2023
RAJENDRA PRASAD KALAKODIMIInventor
May 25, 2023
CURT TURNERInventor
May 19, 2023
PATRICK WOODInventor
May 19, 2023
→
To
CHEMTREAT, INC.