Status
Reexam Preprocessing Completed - Released to Assigned GAU
Filed
Sep 30, 2026
Pre-Order Paper
Window open until about Nov 9, 2026
Last Updated
Oct 8, 2026
Examiner
Not assigned
Art Unit
Requester Law Firm
Requested By
Third Party
Patent Owner(via USPTO assignment records)
Patent Owner Law Firm
Owner hasn't filed yet
Reexam History (17 events)
Oct 9, 2026COMPApplication Is Now Complete
Oct 9, 2026MRXNReexamination Formalities Notice Mailed
Oct 9, 2026MRXNReexamination Formalities Notice Mailed
Oct 8, 2026RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Oct 8, 2026RXTTLRPTTitle Report
Oct 8, 2026RXNREQFDNotice of reexamination request filing date
Oct 8, 2026RXNREQAUNotice of assignment of reexamination request
Oct 1, 2026FTFIFITF set to NO - revise initial setting
Oct 1, 2026PRXRParalegal Reexam Review Complete
Oct 1, 2026RXRLFReExam Litigation Found
Oct 1, 2026RXLITSRReexam Litigation Search Conducted
Sep 30, 2026BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
Sep 30, 2026RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
Sep 30, 2026RXIDS.RReexam - Information Disclosure Statement Filed by Third Party Requester
Sep 30, 2026RXOSUBReceipt of Original Ex Parte Reexam Request
Sep 30, 2026RXC/SRCertificate of Service
Sep 30, 2026RXOSUB.RReexamination requested by third party requester
Prosecution, PTAB & CAFC
PTAB Proceedings (IPR, PGR, CBM, DER)
IPR2021-00161IPR — Institution Denied
Petitioner
Godbersen-Smith Construction Company d/b/a GOMACO Corporation
Petition Filed
Nov 6, 2020
Institution
May 21, 2021
Federal Circuit (CAFC)
None found
Terminal Disclaimer
None found
Prosecution History
None found
Maintenance Fees
Grant
Aug 21, 2018
3.5-yr
Feb 21, 2022
7.5-yr
Feb 21, 2026
Paid Oct 7, 2022
11.5-yr
Feb 21, 2030
Expiry
Jan 17, 2038
Entity Status
Small Entity
Expires
Jan 17, 2038 (11.3 yr remaining)
Other
USPTO Event: Expire PatentUSPTO Event: Maintenance Fee Reminder MailedUSPTO Event: Petition to Accept Late Payment of Maintenance Fee Payment Filed
Assignments
AssignmentReel/Frame: 044656/0448Recorded: Jan 18, 2018
From
GERALD L. DAHLINGERInventor
Jun 13, 2017
RICHARD WOOD FRANCISInventor
Jun 12, 2017
JR. RONALD M. GUNTERTInventor
Jun 9, 2017
RANDALL K. SMITHInventor
Jun 8, 2017
→
To
GUNTERT & ZIMMERMAN CONST. DIV., INC.