Lee E Sanderson
USPTO Patent Examiner·Active 2024 to 2026
Lee E Sanderson is a USPTO patent examiner who has handled 21 ex parte reexaminations between 2024 and 2026, with 17 currently open. These reexams concentrate in Electrical & Electronic, Chemistry & Materials, and Physics & Instruments. ExamPat indexes the full prosecution record for each of these cases, including office-action grounds, certificate outcomes, and downstream PTAB and federal-circuit decisions.
Filings by year
Technology mix
Compare against all examiners
Eight side-by-side metrics: case volume, pendency, OAs per reexam, rejection mix, SNQ denial rate, certification rate, and PTAB appeal rate, with a Δ column showing where this examiner runs higher or lower than the corpus.
- Average and median pendency, both for this examiner and the corpus
- Rejection basis split (102 / 103 / 112) head-to-head
- Certification, SNQ denial, and PTAB appeal rates
Certificate outcome distribution
How this examiner's certificates split across the six possible outcomes: all claims confirmed, confirmed with amendment, confirmed with new claims, mixed, or all claims canceled. Includes share comparison to the corpus distribution.
- Count and share for each of the six outcome buckets
- Δ vs. corpus distribution in percentage points
- Useful for setting realistic patent-owner expectations
Event-to-event timing
Median time for this examiner's cases at each prosecution stage — filing to first office action, filing to NIRC, and filing to certificate — with corpus comparison and sample size.
- Median in months per transition
- Side-by-side with the corpus median
- n column showing how many of this examiner's cases completed each transition
Recent reexaminations (21)
| Control # | Filed | Patent | Title | Pendency | Status |
|---|---|---|---|---|---|
| 90/016,241 | May 4, 2026 | 8,640,498 | FINING OF BOROALUMINO SILICATE GLASSES | — | Open |
| 90/016,217 | Apr 29, 2026 | 8,642,491 | FINING OF BOROALUMINO SILICATE GLASSES | — | Open |
| 90/016,102 | Mar 30, 2026 | 12,313,528 | CUVETTE FOR ANALYSIS OF LIQUIDS | — | Open |
| 90/016,072 | Mar 23, 2026 | 7,851,394 | FINING OF BOROALUMINO SILICATE GLASSES | — | Open |
| 90/015,986 | Feb 24, 2026 | 8,338,909 | TWO-STEP STI FORMATION PROCESS | — | Open |
| 90/015,928 | Feb 3, 2026 | 7,439,623 | SEMICONDUCTOR DEVICE HAVING VIA CONNECTING BETWEEN INTERCONNECTS | — | Open |
| 90/015,929 | Feb 3, 2026 | 7,632,751 | SEMICONDUCTOR DEVICE HAVING VIA CONNECTING BETWEEN INTERCONNECTS | — | Open |
| 90/015,798 | Dec 19, 2025 | 9,130,074 | HIGH-EFFICIENCY SOLAR CELL STRUCTURES AND METHODS OF MANUFACTURE | — | Open |
| 90/015,783 | Dec 15, 2025 | 9,130,074 | HIGH-EFFICIENCY SOLAR CELL STRUCTURES AND METHODS OF MANUFACTURE | — | Open |
| 90/015,753 | Dec 3, 2025 | 9,093,473 | METHOD FOR FABRICATING METAL-OXIDE SEMICONDUCTOR TRANSISTOR | — | Open |
| 90/015,658 | Nov 4, 2025 | 8,961,630 | METHODS OF FORMING CUTTING ELEMENTS BY REMOVING METAL FROM INTERSTITIAL SPACES IN POLYCRYSTALLINE DIAMOND | — | Open |
| 90/015,558 | Sep 30, 2025 | 10,427,443 | LITHOGRAPHIC PRINTING PLATE PRECURSOR, METHOD OF PREPARING LITHOGRAPHIC PRINTING PLATE, AND LITHOGRAPHIC PRINTING METHOD | — | Open |
| 90/015,524 | Sep 23, 2025 | 10,525,696 | LITHOGRAPHIC PRINTING PLATE PRECURSOR, LITHOGRAPHIC PRINTING PLATE MANUFACTURING METHOD, PRINTING METHOD AND ALUMINUM SUPPORT MANUFACTURING METHOD | — | Open |
| 90/015,480 | Aug 26, 2025 | 9,029,063 | NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSORS | — | Open |
| 90/015,331 | Jun 17, 2025 | 9,178,465 | Photovoltaic Roofing Elements Including Tie Layer Systems And Roofs Using Them | — | Open |
| 90/015,330 | Jun 17, 2025 | 8,438,796 | PHOTOVOLTAIC ROOFING ELEMENTS INCLUDING TIE LAYER SYSTEMS, AND ROOFS USING THEM, AND METHODS FOR MAKING THEM | — | Open |
| 90/015,332 | Jun 17, 2025 | 8,375,653 | PHOTOVOLTAIC ROOFING ELEMENTS INCLUDING TIE LAYER SYSTEMS | — | Open |
| 90/019,684 | Sep 26, 2024 | 11,527,339 | METHOD OF MANUFACTURING ELECTRICAL CABLE, AND RESULTING PRODUCT, WITH REDUCED REQUIRED INSTALLATION PULLING FORCE | 13 mo | Closed |
| 90/019,666 | Sep 17, 2024 | 10,775,376 | Methods for Assaying Cellular Binding Interactions | 15 mo | Closed |
| 90/019,570 | Jul 4, 2024 | 11,842,827 | METHOD OF MANUFACTURING ELECTRICAL CABLE, AND RESULTING PRODUCT, WITH REDUCED REQUIRED INSTALLATION PULLING FORCE | 15 mo | Closed |
| 90/019,470 | Apr 4, 2024 | 10,964,987 | SEPARATOR AND ENERGY STORAGE DEVICE | 23 mo | Closed |
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