Vervain, LLC v. Micron Technology, Inc. et al.
Infringement action filed 10 May 2021 in the United States District Court for the Western District of Texas and closed 30 Jun 2023, with 4 patents asserted. Recorded basis of termination: dismissed with prejudice.
Case record
- Patents involved
- US9997240B2US8891298B2US10950300B2US9196385B2
- Case no.
- 6:21-cv-00487
- Verdict cause
- Infringement action
- Court
- W.D. Tex.
- Court level
- District Court
- Case region
- Texas
- Chief judge
- Alan D Albright
- Trial level
- First instance
- Filed – Closed
- 10 May 2021 – 30 Jun 2023
- Duration
- 781 days
- Basis of termination
- Dismissed with Prejudice
- Products & marks
- Lifetime mixed level non-volatile memory system
Check this patent against your own product
Prior art, claim scope, infringement exposure and design-around routes. Every answer cites the records behind it.
Get an FTO claim chart- 01Ranked prior artEvery hit source-linked
- 02Claim-level comparisonAgainst your own product
- 03Legal statusAcross 174 jurisdictions
Lifetime mixed level non-volatile memory system
A controller for managing at least one MLC non-volatile memory module and at least one SLC non-volatile memory module. The flash controller is adapted to determine if a range of addresses listed by an entry and mapped to said at least one MLC non-volatile memory module fails a data integrity test. In the event of such a failure, the controller remaps said entry to an equivalent range of addresses of said at least one SLC non-volatile memory module. The flash controller is further adapted to determine which of the blocks in the MLC and SLC non-volatile memory modules are accessed most frequently and allocating those blocks that receive frequent writes to the SLC non-volatile memory module and those blocks that receive infrequent writes to the MLC non-volatile memory module.
- Legal status
- Active
- Granted
- 12 Jun 2018
- Earliest priority
- 19 Jul 2011
- Est. expiry
- 25 Apr 2032
- Validity challenges
- 2 on recordIPR2025-00214 · Patentability · filed by PHISON ELECTRONICS CORPORATIONIPR2021-01549 · Patentability · filed by Micron Technology, Inc.
- Licences recorded
- None recorded
- Inventors
- RAO, G. R. MOHAN
- Classification
- G11C16/04G11C29/00G11C29/52G06F11/10G06F12/02G11C16/34G11C16/16G11C11/56
- Prosecution counsel
- MUNCK WILSON MANDALA L.L.P
- Examiner
- BYRNE, HARRY W
Lifetime mixed level non-volatile memory system
A flash controller for managing at least one MLC non-volatile memory module and at least one SLC non-volatile memory module. The flash controller is adapted to determine if a range of addresses listed by an entry and mapped to said at least one MLC non-volatile memory module fails a data integrity test. In the event of such a failure, the controller remaps said entry to an equivalent range of addresses of said at least one SLC non-volatile memory module. The flash controller is further adapted to determine which of the blocks in the MLC and SLC non-volatile memory modules are accessed most frequently and allocating those blocks that receive frequent writes to the SLC non-volatile memory module and those blocks that receive infrequent writes to the MLC non-volatile memory module.
- Legal status
- Active
- Granted
- 18 Nov 2014
- Earliest priority
- 19 Jul 2011
- Est. expiry
- 17 Apr 2033
- Validity challenges
- 3 on recordIPR2025-00212 · Patentability · filed by PHISON ELECTRONICS CORPORATIONIPR2021-01547 · Other · filed by Micron Technology, Inc.IPR2025-00614 · Patentability · filed by Kingston Technology Co., Inc.
- Licences recorded
- None recorded
- Inventors
- RAO, G., R., MOHAN
- Classification
- G06F12/02G11C16/34
- Prosecution counsel
- MUNCK WILSON MANDALA L.L.P
- Examiner
- BYRNE, HARRY W
Also asserted in this case
2 moreThe docket lists 4 asserted patents. Full bibliographic detail, drawings and prosecution history for the remaining 2 asserted patents are one query away in Eureka.
Parties of record
Vervain, LLC
- Core tech
- G11C16/04G11C29/00G11C29/52G06F11/10
- Counsel
- Alan Whitehurst · Arvind Jairam · Christopher Paul McNett · Elizabeth Bernard · James Quigley · Jennifer L. Truelove · John B. Campbell · Kathy H. Li · Stuart Mccommas
- Firm
- Kirkland & Ellis LLP, McKool Smith PC
Micron Technology, Inc.
- Core tech
- Not recorded
- Counsel
- Christopher Childers · Claudia Wilson Frost · Darryl Adams · David N. Deaconson · Jared Bobrow · Jeremy Jason Lang · Margaret Abernathy · Parth Sagdeo · Robert Manhas
- Firm
- Orrick, Herrington & Sutcliffe LLP, Pakis, Giotes, Page & Burleson, Slayden Grubert Beard PLLC
- Also named
- Micron Semiconductor Products, Inc. · Micron Technology Texas, LLC
Counsel of record
| Attorney | For | Role |
|---|---|---|
| Alan Whitehurst | Vervain, LLC | Plaintiff |
| Arvind Jairam | Vervain, LLC | Plaintiff |
| Christopher Paul McNett | Vervain, LLC | Plaintiff |
| Elizabeth Bernard | Vervain, LLC | Plaintiff |
| James Quigley | Vervain, LLC | Plaintiff |
| Jennifer L. Truelove | Vervain, LLC | Plaintiff |
| John B. Campbell | Vervain, LLC | Plaintiff |
| Kathy H. Li | Vervain, LLC | Plaintiff |
| Stuart Mccommas | Vervain, LLC | Plaintiff |
| Christopher Childers | Micron Technology, Inc. | Defendant |
| Claudia Wilson Frost | Micron Technology, Inc. | Defendant |
| Darryl Adams | Micron Technology, Inc. | Defendant |
| David N. Deaconson | Micron Technology, Inc. | Defendant |
| Jared Bobrow | Micron Technology, Inc. | Defendant |
| Jeremy Jason Lang | Micron Technology, Inc. | Defendant |
| Margaret Abernathy | Micron Technology, Inc. | Defendant |
| Parth Sagdeo | Micron Technology, Inc. | Defendant |
| Robert Manhas | Micron Technology, Inc. | Defendant |
Basis of termination
From the record · verbatim“Pursuant to Federal Rule of Civil Procedure 41 (a), it is hereby stipulated by and among plaintiff, Vervain, LLC, and defendants, Micron Technology, Inc., Micron Semiconductor Products, Inc., and Micron Technology Texas, LLC, that the entire action, including all claims asserted in the action, is hereby dismissed with prejudice, each side to bear its own costs of suit, expenses, and attorneys’ fees.”
Case 6:21-cv-00487 · W.D. Tex. · closed 30 June 2023
Related cases
Three questions this record usually leads to. Each one runs against the full litigation and patent corpus, and cites what it finds.
Frequently asked questions
What is case 6:21-cv-00487?
6:21-cv-00487 is a patent infringement action brought by Vervain, LLC against Micron Technology, Inc., filed on 10 May 2021 in the United States District Court for the Western District of Texas. The case closed on 30 June 2023.
Which patents were asserted in 6:21-cv-00487?
US9997240B2 (“Lifetime mixed level non-volatile memory system”), assigned to VERVAIN, LLC, currently active; US8891298B2 (“Lifetime mixed level non-volatile memory system”), assigned to VERVAIN, LLC, currently active; US10950300B2 (“Lifetime mixed level non-volatile memory system”), assigned to VERVAIN, LLC; US9196385B2 (“Lifetime mixed level non-volatile memory system”), assigned to VERVAIN, LLC. The record also lists Lifetime mixed level non-volatile memory system.
How was case 6:21-cv-00487 terminated?
The recorded basis of termination is dismissed with prejudice. The termination text reads: “Pursuant to Federal Rule of Civil Procedure 41 (a), it is hereby stipulated by and among plaintiff, Vervain, LLC, and defendants, Micron Technology, Inc., Micron Semiconductor Products, Inc., and Micron Technology Texas, LLC, that the entire action, including all claims asserted in the action, is hereby dismissed with prejudice, each side to bear its own costs of suit, expenses, and attorneys’ fees.”
What does dismissal with prejudice mean?
A dismissal with prejudice permanently ends the claims that were filed, so the same claims cannot be brought again against that defendant. It is the usual form when the parties have settled.
How long did case 6:21-cv-00487 take?
781 calendar days, from filing on 10 May 2021 to closure on 30 June 2023.
Who were the attorneys and the judge in 6:21-cv-00487?
Chief Judge Alan D Albright presided. Alan Whitehurst, Arvind Jairam, Christopher Paul McNett, Elizabeth Bernard, James Quigley, Jennifer L. Truelove, John B. Campbell, Kathy H. Li and Stuart Mccommas are recorded as counsel for plaintiff Vervain. Christopher Childers, Claudia Wilson Frost, Darryl Adams, David N. Deaconson, Jared Bobrow, Jeremy Jason Lang, Margaret Abernathy, Parth Sagdeo and Robert Manhas appear for defendant Micron Technology.
Disclaimer. This page reproduces publicly available court docket data for case 6:21-cv-00487 and is provided for general information and reference only. It is not legal advice and must not be relied upon as such.
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No characterisation of the parties or the outcome. This page reports what the record contains. Nothing here should be read as an assertion that any party infringed, that any patent is valid or invalid, that any settlement occurred, or that any party prevailed.
No FTO or validity opinion. Nothing on this page constitutes a freedom-to-operate, novelty, validity or infringement opinion. Any decision touching a live patent dispute should be verified independently and reviewed with qualified patent counsel.