90/016,281CORROSION CONTROL FOR WATER SYSTEMS USING PASSIVATORS AND A HYDROXYCARBOXYLIC ACID12,601,064Open

Status

Reexam Assigned to Examiner for Determination

Filed

May 14, 2026

Last Updated

May 26, 2026

Art Unit

3991

Requester

Unknown

Requester Law Firm

Unknown

Requested By

Third Party

Patent OwnerInferred

Chemtreat Inc.

P.O. Law Firm

Hach Company

Sector (CPC)

CChemistry & Materials
C23Surface Treatment
C23FSurface Etching

USPC

106Compositions: Coating Or Plastic

Reexam History (15 events)

May 26, 2026MRXNReexamination Formalities Notice Mailed
May 26, 2026COMPApplication Is Now Complete
May 26, 2026MRXNReexamination Formalities Notice Mailed
May 26, 2026DOCKCase Docketed to Examiner in GAU
May 22, 2026RXTTLRPTTitle Report
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 21, 2026PRXRParalegal Reexam Review Complete
May 19, 2026FTFSFITF set to YES - revise initial setting
May 19, 2026RXLITSRReexam Litigation Search Conducted
May 14, 2026RXOSUBReceipt of Original Ex Parte Reexam Request
May 14, 2026RXOSUB.RReexamination requested by third party requester
May 14, 2026RXC/SRCertificate of Service
May 14, 2026BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)