90/016,290STAIRCASE STRUCTURE IN THREE-DIMENSIONAL MEMORY DEVICE AND METHOD FOR FORMING THE SAME12,232,313Open
Status
Request for Reexamination Denied
Filed
May 15, 2026
Pre-Order Paper
Filed Jun 15, 2026
Requester reply Jun 30, 2026
Last Updated
Jul 23, 2026
Examiner
Art Unit
Requester
Requester Law Firm
Requested By
Third Party
Patent Owner(via USPTO assignment records)
Patent Owner Law Firm
Owner hasn't filed yet
Reexam History (29 events)
Sep 2, 2026RXOPPPETReexam - Opposition filed in response to petition
Aug 21, 2026RXPET.Receipt of Petition in a Reexam
Aug 21, 2026RXC/SRCertificate of Service
Aug 21, 2026RXC/SRCertificate of Service
Jul 23, 2026MREXDRX - Mail Ex Parte Request for Reexamination Denied
Jul 13, 2026RXPTDIReexam Petition Decision - Dismissed
Jul 13, 2026MRTDIRX - Mail Petition Decision - Dismissed
Jun 30, 2026RXPET.Receipt of Petition in a Reexam
Jun 30, 2026RXC/SRCertificate of Service
Jun 30, 2026RXC/SRCertificate of Service
Jun 26, 2026PA..Change in Power of Attorney (May Include Associate POA)
Jun 15, 2026RXC/SRCertificate of Service
Jun 8, 2026RXC/SRCertificate of Service
Jun 2, 2026MRXNReexamination Formalities Notice Mailed
Jun 2, 2026MRXNReexamination Formalities Notice Mailed
Jun 2, 2026COMPApplication Is Now Complete
Jun 1, 2026RXTTLRPTTitle Report
Jun 1, 2026RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Jun 1, 2026RXNREQFDNotice of reexamination request filing date
Jun 1, 2026RXNREQAUNotice of assignment of reexamination request
Jun 1, 2026FTFSFITF set to YES - revise initial setting
Jun 1, 2026DOCKCase Docketed to Examiner in GAU
May 19, 2026PRXRParalegal Reexam Review Complete
May 15, 2026RXPA..RReexam - Change in Power of Attorney (May Include Associate POA) for Third Party Requester
May 15, 2026RXOSUB.RReexamination requested by third party requester
May 15, 2026RXOSUBReceipt of Original Ex Parte Reexam Request
May 15, 2026RXIDS.RReexam - Information Disclosure Statement Filed by Third Party Requester
May 15, 2026RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
May 15, 2026BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
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
Feb 18, 2025
3.5-yr
Aug 18, 2028
7.5-yr
Aug 18, 2032
11.5-yr
Aug 18, 2036
Expiry
May 8, 2043
Entity Status
Large Entity
Expires
May 8, 2043 (16.9 yr remaining)
Assignments
AssignmentReel/Frame: 063569/0509Recorded: May 8, 2023
From
ZHONGWANG SUNInventor
Apr 14, 2020
ZHILIANG XIAInventor
Apr 14, 2020
ZHONG ZHANGInventor
Apr 14, 2020
WENXI ZHOUInventor
Apr 14, 2020
→
To
YANGTZE MEMORY TECHNOLOGIES CO., LTD.