Microsoft Corporation et al. vs. Lemko Corp.
Explore the PTAB proceeding IPR2023-00531 filed by Microsoft Corporation et al. on 2023-02-14. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.
Proceeding Overview
Proceeding Number
IPR2023-00531
Filing Date
2023-02-14
Accorded Filing Date
2023-02-14
Institution Decision Date
2023-09-25
Last Modified Date
2026-08-31
Proceeding Type
IPR
Termination Date
2024-09-10
Trial Status
Final Written Decision
Parties & Counsel
Petitioner
Microsoft Corporation et al.
Represented By
Kang, Robertet alPatent Owner / Respondent
Lemko Corp.
Represented By
Hannah, Jameset alTribunal & Venue
Tribunal
Patent Trial and Appeal Board (USPTO)
Technology Center
TC 2400 - Computer Networks, Multiplex & Cybersecurity
Patent Information
Respondent Application Number
12172639
Respondent Patent Number
7855988
External Links
Respondent Inventor
Shaowei Pan
Respondent Tech Center
TC 2400 - Computer Networks, Multiplex & Cybersecurity
Address and Attorney/Agent Information
Power of Attorney & Correspondence
Firm
/ Entity Name
Lemko Corporation c/o Cygan Law Offices, P.C.
Customer
Number
171308
Address
1901 N. Roselle Road, Suite 800, Schaumburg, IL, 60195, UNITED STATES
Attorney / Agent Information
| Reg # | Name | Phone |
|---|---|---|
| 50937 | Joseph Cygan | 847-973-5246 |
Proceeding Documents
81
34
Other: Fed Circuit mandate OTHER
2026-08-31
FILING PARTY: BOARD
33
Other: other court decision OTHER
2026-08-31
FILING PARTY: BOARD
32
Patent Owner's Notice of Appeal NOTICE
2024-09-16
FILING PARTY: PATENT OWNER
31
Judgment Final Written Decision FINAL
2024-09-10
FILING PARTY: BOARD
30
Other: Hearing transcript OTHER
2024-08-19
FILING PARTY: BOARD