Wolf Greenfield & Sacks, P.C.
Patent reexamination counsel·27 ex parte reexams
Wolf Greenfield & Sacks, P.C. has served as patent-owner counsel in 27 USPTO ex parte reexaminations, with 5 currently open. The firm most often represents LiTL LLC, Magic Leap, Inc., and Nuance Communications, Inc.. ExamPat indexes the full prosecution record for each proceeding, including office-action grounds, certificate outcomes, and downstream PTAB and Federal Circuit decisions.
Filings by year
Outcome track record
How this firm's reexams resolve once a certificate issues: all claims confirmed, amended, mixed, or canceled.
- Certificate outcome split across every bucket
- Share of proceedings where claims survived
Practice metrics
Certificate rate, average pendency, and the open/closed split across the firm's full reexam docket.
- Certificate rate of closed proceedings
- Average pendency in months
Examiners & adversaries
Which examiners most often decide this firm's reexams, and which requesters most often challenge its patents.
- Most frequent examiners
- Top opposing requesters
Recent reexaminations (showing 25 of 27)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/015,605 | Oct 16, 2025 | 8,589,236 | MOBILE PAYMENT STATION SYSTEM AND METHOD | Mobile Equity Corp. | Open |
| 90/015,482 | Sep 12, 2025 | 7,524,614 | NEGATIVE-WORKING RADIATION-SENSITIVE COMPOSITIONS AND IMAGEABLE MATERIALS | Eastman Kodak Company | Open |
| 90/015,480 | Aug 26, 2025 | 9,029,063 | NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSORS | Eastman Kodak Company | Open |
| 90/015,431 | Aug 5, 2025 | 9,899,481 | Electronic Component and Switch Circuit | Infineon Technologies Austria AG | Open |
| 90/015,373 | Jul 10, 2025 | 9,070,755 | Transistor Having Elevated Drain Finger Termination | Infineon Technologies Americas Corp. | Open |
| 90/015,347 | Jun 27, 2025 | 12,209,354 | CONTINUOUS POLYESTER FIBER TEXTILE CLOTH, PROCESSING EQUIPMENT AND METHOD | Roemar, Inc. | Closed |
| 90/019,577 | Jul 12, 2024 | 10,957,112 | CROSS REALITY SYSTEM | Magic Leap, Inc. | Closed |
| 90/019,485 | Apr 16, 2024 | 11,386,629 | CROSS REALITY SYSTEM | Magic Leap, Inc. | Closed |
| 90/019,413 | Feb 13, 2024 | 11,115,565 | USER FEEDBACK FOR REAL-TIME CHECKING AND IMPROVING QUALITY OF SCANNED IMAGE | Magic Leap, Inc. | Closed |
| 90/015,310 | Oct 10, 2023 | 8,856,030 | Method, system and software for associating attributes within digital media presentations | 10Tales, Inc. | Closed |
| 90/015,035 | May 24, 2022 | 8,289,688 | Portable Computer with Multiple Display Configurations | LiTL LLC | Closed |
| 90/015,030 | May 17, 2022 | 10,806,285 | APPARATUS TO PREVENT CURLING OF A RUG CORNER | Just Fur Love LLC | Closed |
| 90/015,025 | May 6, 2022 | 10,289,154 | Portable Computer with Multiple Display Configurations | LiTL LLC | Closed |
| 90/015,018 | Apr 28, 2022 | 9,373,772 | CMOS INTEGRATED METHOD FOR THE RELEASE OF THERMOPILE PIXEL ON A SUBSTRATE BY USING ANISOTROPIC AND ISOTROPIC ETCHING | Excelitas Technologies Singapore Pte Ltd. | Closed |
| 90/014,965 | Feb 25, 2022 | 8,624,844 | Portable Computer with Multiple Display Configurations | LiTL LLC | Closed |
| 90/014,958 | Feb 16, 2022 | 9,880,715 | System and Method for Streamlining User Interaction With Electronic Content | LiTL LLC | Closed |
| 90/014,395 | Oct 24, 2019 | 10,022,435 | Nucleic Acid Vaccines | ModernaTX, Inc. | Closed |
| 90/014,167 | Aug 17, 2018 | 9,872,900 | NUCLEIC ACID VACCINES | ModernaTX, Inc. | Closed |
| 90/014,143 | May 22, 2018 | 7,521,128 | METHODS FOR THE IMPLEMENTATION OF NANOCRYSTALLINE AND AMORPHOUS METALS AND ALLOYS AS COATINGS | Xtalic Corporation | Closed |
| 90/020,113 | Aug 1, 2017 | 9,368,936 | LASER DIODE FIRING SYSTEM | Waymo LLC | Closed |
| 90/013,878 | Dec 13, 2016 | 9,135,571 | Methods and Apparatus for Entity Detection | Nuance Communications, Inc. | Closed |
| 90/013,719 | Apr 7, 2016 | 8,796,001 | METALLOENZYME INHIBITOR COMPOUNDS | Viamet Pharmaceuticals, Inc. | Closed |
| 90/013,355 | Sep 28, 2014 | 8,455,190 | Enrichment of a Target Sequence | Dana-Farber Cancer Institute, Inc. | Closed |
| 90/012,716 | Nov 5, 2012 | 6,436,135 | PROSTHETIC VASCULAR GRAFT | Bard Peripheral Vascular, Inc. | Closed |
| 90/012,438 | Aug 17, 2012 | 6,588,658 | TRANSACTION CARD WITH ATTACHED AUXILIARY MEMBER | ABnote USA, Inc. | Closed |
Other reexam law firms
- Knobbe, Martens, Olson & Bear, LLP78 reexams · 10 pending
- Fish & Richardson P.C.68 reexams · 7 pending
- Sterne, Kessler, Goldstein & Fox P.L.L.C.63 reexams · 8 pending
- Heim, Payne & Chorush, LLP36 reexams · 28 pending
- Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.34 reexams · 1 pending
- Banner & Witcoff, Ltd.34 reexams · 2 pending
See the full reexam picture for Wolf Greenfield & Sacks, P.C.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.