Phison Electronics Corporation vs. Vervain, LLC

Explore the PTAB proceeding IPR2025-00214 filed by Phison Electronics Corporation on 2024-12-06. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00214

Filing Date

2024-12-06

Accorded Filing Date

2024-12-04

Institution Decision Date

2025-07-10

Last Modified Date

2026-01-07

Proceeding Type

IPR

Termination Date

2025-07-10

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Phison Electronics Corporation

Represented By

Chang, Hsuanyehet al

Patent Owner / Respondent

Vervain, LLC

Represented By

Whitehurst, Alanet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2800 - Semiconductors, Electrical & Optical Systems

Patent Information

1 Patent Involved

Respondent Application Number 14950553

Respondent Patent Number 9997240

External Links

Espacenet

Google Patents

Respondent Inventor G.R. Mohan Rao

Respondent Tech Center TC 2800 - Semiconductors, Electrical & Optical Systems

Address and Attorney/Agent Information

6 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name MUNCK WILSON MANDALA L.L.P

Customer Number 25883

Address 2000 McKinney Ave Ste 1900, Dallas, TX, 75201, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
30646	Gregory Howison	972-628-3624
34194	Edward Jorgenson	972-628-3600
37751	Brian Walker	972-628-3652
39095	John Arnott	972-628-3600
66850	William Howison	972-628-3651
74472	Keith Harden	972-628-3611

Proceeding Documents

Notice: refund approved NOTICE

2026-01-07 FILING PARTY: BOARD

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Request for Refund OTHER

2025-12-31 FILING PARTY: PETITIONER

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Director Discretionary Decision: Deny RESPONSE

2025-07-10 FILING PARTY: BOARD

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PETITIONER’S OPPOSITION TO PATENT OWNER’S SUPPLEMENTAL BRIEF OTHER

2025-06-17 FILING PARTY: PETITIONER

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1093

Docket list for Vervain, LLC v. Micron Technology Inc., et al., No. 6:21-cv-00487 (W.D. Tex. filed May 10, 2021) Exhibit

2025-06-16 FILING PARTY: PETITIONER

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Phison Electronics Corporation vs. Vervain, LLC

Proceeding Overview

Parties & Counsel

Petitioner

Phison Electronics Corporation

Represented By

Patent Owner / Respondent

Vervain, LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Request for Refund OTHER

Director Discretionary Decision: Deny RESPONSE

PETITIONER’S OPPOSITION TO PATENT OWNER’S SUPPLEMENTAL BRIEF OTHER

Docket list for Vervain, LLC v. Micron Technology Inc., et al., No. 6:21-cv-00487 (W.D. Tex. filed May 10, 2021) Exhibit

Western District of Texas Calendar Year 2024 Statistical Public Report Exhibit

“Interim Procedure for Discretionary Denials in AIA Post-Grant Proceedings with Parallel District Court Litigation,” issued March 24, 2025 Exhibit

Statistics on Median Time-to-Trial between June 2, 2024 and June 2, 2025 Exhibit

Docket list for Vervain, LLC v. Western Digital Corp. et al., No. 6:21-cv-00488 (W.D. Tex. filed May 10, 2021) Exhibit

Consolidated Trial Practice Guide (Nov. 2019) Exhibit

Active Cases Before Judge Alan D. Albright as of June 2, 2025 Exhibit

PETITIONER’S OPPOSITION TO PATENT OWNER’S REQUEST FOR DISCRETIONARY DENIAL UNDER 35 U.S.C. § 314(a) RESPONSE

“Interim Processes for PTAB Workload Management,” issued March 26, 2025 Exhibit

Email from PO’s Counsel re: Reduction to No More Than Five Asserted Claims Per Patent and Sixteen Total Across the Eight Patents-in-Suit (June 9, 2025) Exhibit

Amended Order Assigning the Business of The Court (January 31, 2025) Exhibit

Patent Owner's Current List of Exhibits NOTICE

Patent Owner's Supplemental Brief OTHER

Excerpts from the Prosecution History of U.S. Patent Application No. 14/811,844 (issued as U.S. Patent No. 10,824,340), including Office Action dated May 9, 2019. Exhibit

U.S. Patent No. 10,824,340, assigned to Phison Electronics Corp. Exhibit

Email Correspondence Exhibit

“Judge Albright Patent FAQ,” https://www.txwd.uscourts.gov/for-attorneys/judge-albright-courtroom-faq/. Accessed December 18, 2024) Exhibit

Judge Albright’s Standing Order Governing Proceedings (OGP) 4.4—Patent Cases, Filed January 23, 2024. Exhibit

Excerpts from Micheloni et al., Inside NAND Flash Memories (1st ed. 2010) (“Micheloni”) Exhibit

Vervain, LLC v. Phison Electronics Corporation, No. 1:24-cv-259-ADA, Dkt. 16 (W.D. Tex. Jul. 15, 2024) (agreed scheduling order) Exhibit

Declaration of Dr. Sunil Khatri Exhibit

Excerpts from the Prosecution History of U.S. Patent No. 11,830,546 Exhibit

Vervain, LLC v. Phison Electronics Corp., No. 1:24-cv-00259, Dkt. 53 (W.D. Tex. Jan. 29, 2025) (Joint Notice Extending Deadlines) Exhibit

Markman Hearing Transcript dated February 6, 2025, for Vervain, LLC v. Phison Electronics Corporation, No. 1:24-cv-259-ADA and Vervain, LLC v. Kingston Technology Company., et al. No. 1:24-cv-254-ADA. Exhibit

“Interim Processes for PTAB Workload Management Memorandum,” issued March 26, 2025, https://www.uspto.gov/sites/default/files/documents/InterimProcesses-PTABWorkloadMgmt-20250326.pdf. Accessed May 13, 2025. Exhibit

Docket Sheet for Vervain, LLC v. Phison Electronics Corporation, No. 1:24-cv-259-ADA (W.D. Tex.) (accessed May 12, 2025) Exhibit

Vervain v. Western Digital Corp. et al., No. 6:21-cv-00488-ADA, Dkt. 180 (W.D. Tex. Jul. 26, 2023) (Redacted Copy of Order on the Pending Motions and Motions In Limine). Exhibit

Patent Owner's Discretionary Denial Brief RESPONSE

Phison’s Final Invalidity Contentions served on February 28, 2025 in Vervain, LLC v. Phison Electronics Corporation, No. 1:24-cv-259-ADA (W.D. Tex.) Exhibit

Phison Electronics Corp. v. Vervain, LLC, PGR2024-00047, Paper 9 (P.T.A.B. Mar. 17, 2024) (Decision Denying Institution of Post-Grant Review of U.S. Patent No. 11,830,546) Exhibit

Phison Electronics Corp. v. Vervain, LLC, PGR2024-00048, Paper 9 (P.T.A.B. April 28, 2025) (Decision Denying Institution of Post-Grant Review of U.S. Patent No. 11,854,612) Exhibit

Vervain, LLC v. Western Digital Corp. et al., No. 6:21-cv-00488-ADA, Dkt. No. 183, Pretrial Hearing Redacted Transcript (W.D. Tex. Aug. 7, 2023) Exhibit

Vervain v. Western Digital Corp. et al., No. 6:21-cv-488-ADA, Dkt. 41 (W.D. Tex. Jan. 24, 2022) (Claim Construction Order) Exhibit

Preliminary Claim Constructions for Vervain, LLC v. Phison Electronics Corporation, No.1:24-cv-259-ADA and Vervain, LLC v. Kingston Technology Company., et al., No. 1:24-cv-254-ADA – email from Mr. Brown received on February 5, 2025. Exhibit

U.S. Patent App. Pub. No. 2011/0096601 to Gavens et al. (“Gavens-601”) Exhibit

Chen et al., Ultra MLC Technology Introduction, Advantech Technical White Paper (Oct. 5, 2012) (“Chen”) Exhibit

Phison Electronics Corp. v. Vervain, LLC, PGR2024-00047, Paper 2 (P.T.A.B. Aug. 27, 2024) (petition for post grant review of U.S. Patent No. 11,830,546) Exhibit

Patent Owner's Preliminary Response on the Merits and other Non-Discretionary Considerations POPR

Notice: Extending Deadline for Discretion Briefing NOTICE

Patent Owner's Updated Mandatory Notice NOTICE

Notice: Notice filing date accorded NOTICE

Notice : Power of Attorney NOTICE

Notice : Mandatory Notice NOTICE

U.S. Patent Appl. Pub. No. 2010/0172179 Exhibit

U.S. Patent Appl. Pub. No. 2009/0307418 Exhibit

U.S. Patent Appl. Pub. No. 2009/0327591 Exhibit

U.S. Patent No. 8,806,301 Exhibit

Adaptive Endurance Coding for NAND Flash Exhibit

Write Endurance in Flash Drives Exhibit

U.S. Patent Appl. Pub. No. 2008/0140918 Exhibit

U.S. Patent No. 5,930,167 Exhibit

MICROSOFT COMPUTER DICTIONARY Exhibit

A Flexible Flash File System for MLC NAND Flash Memory Exhibit

Program Interference in MLC NAND Flash Memory Exhibit

First Amended Complaint Exhibit

U.S. Patent Appl. Pub. No. 2011/0271043 Exhibit

U.S. Patent No. 7,855,916 Exhibit

U.S. Patent No. 8,891,298 Exhibit

Excerpts from prosecution history of ’240 patent Exhibit

Error Characterization and Coding Schemes for Flash Memories Exhibit

A survey of Flash Translation Layer Exhibit