Prosecution Insights
Prosecution Insights
Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics
170 pending office actions • 73 art units • 134 examiners • 0 of 170 (0%) have an AI response strategy ready • 414 patents granted in the last 365 days
TDK Corporation manages a massive portfolio with 181 pending office actions in the Semiconductors, Circuits & Optics technology area. These actions are distributed among 144 distinct examiners, indicating that many officials are reviewing multiple applications. The portfolio's technical breadth is immense, spanning 54 distinct art units at the patent office. This high number of 54 distinct art units indicates a very diverse range of semiconductor and optical innovations being prosecuted simultaneously.
CHAN, TSZFUNG JACKIE is the busiest examiner, currently overseeing 6 pending office actions. While 6 actions is the highest concentration for one person, it is a small part of the 181 pending office actions total. This requires the company to manage 144 distinct examiner relationships across 54 distinct art units, making for a highly complex prosecution landscape. Practitioners must ensure that technical arguments remain consistent across the 181 pending office actions, despite the wide variety of examiners and art units involved.
Based on the USPTO statutory response window for each pending office action. 36 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 36 of the docket's apps have a known mailing date.
Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.
| Bucket | Cases |
|---|---|
| §101 only | 2 (1%) |
| §101 + other | 4 (2%) |
| §103 only | 56 (33%) |
| §102 only | 17 (10%) |
| §112 only | 7 (4%) |
| Double-patenting only | 2 (1%) |
| Double-patenting + other | 4 (2%) |
| Multi-statute (no §101) | 77 (45%) |
| No statute on record | 1 (1%) |
How the docket's pending cases split across USPTO tech-center bands.
Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| CHAN, TSZFUNG JACKIE | 5 | 75.6% | +18.8% |
| LIAN, MANG TIN BIK | 5 | 70.4% | +25.8% |
| SCHINDLER, DAVID M | 4 | 40.7% | +23.7% |
| CHAU, LISA N | 3 | 25.4% | +17.2% |
| RAKOWSKI, CARA E | 3 | 65.2% | +6.8% |
| PATEL, RAKESH BHASKARBHAI | 3 | 91.5% | +13.5% |
| BARNES, MALCOLM | 3 | 81.3% | +4.8% |
| SU, XIAOWEI | 3 | 71.8% | +12.7% |
| NGUYEN, TUYEN T | 3 | 81.6% | +1.4% |
| SINCLAIR, DAVID M | 3 | 68.4% | +19.6% |
Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 5 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 18404362 | COIL COMPONENT | PATEL, RAKESH BHASKARBHAI | — |
| 18542964 | COIL DEVICE | PATEL, RAKESH BHASKARBHAI | — |
| 18501635 | MULTILAYER ELECTRONIC COMPONENT | BARNES, MALCOLM | — |
| 18245408 | COIL COMPONENT AND MANUFACTURING METHOD THEREFOR | NGUYEN, TUYEN T | — |
| 18165682 | WIRELESS TRANSMISSION MODULE | NGUYEN, TUYEN T | — |
Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 17763865 | SOFT MAGNETIC ALLOY AND MAGNETIC COMPONENT | HILL, STEPHANI A | 79d overdue |
| 18127150 | SOFT MAGNETIC METAL PARTICLE, DUST CORE, AND MAGNETIC COMPONENT | SMITH, CATHERINE P | 73d overdue |
| 17699972 | FERRITE COMPOSITION AND ELECTRONIC COMPONENT | MILLER, CAMERON KENNETH | 58d overdue |
| 17992409 | SOFT MAGNETIC POWDER, MAGNETIC CORE, MAGNETIC COMPONENT, AND ELECTRONIC DEVICE | CHAU, LISA N | 51d overdue |
| 18039561 | RESERVOIR ELEMENT | CAMPOS, ALFREDO | 9d overdue |
| 17948486 | MAGNETIC SENSOR | SCHINDLER, DAVID M | 9d overdue |
| 18561449 | SEMICONDUCTOR ELEMENT AND PRODUCTION METHOD THEREFOR | ADHIKARI DAWADI, BIPANA | 8d |
| 18838524 | CAPACITOR, METHOD OF MANUFACTURING THEREOF AND USE THEREOF | SINCLAIR, DAVID M | 12d |
Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 8 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 17992409 | SOFT MAGNETIC POWDER, MAGNETIC CORE, MAGNETIC COMPONENT, AND ELECTRONIC DEVICE | CHAU, LISA N | 51d overdue |
| 17948486 | MAGNETIC SENSOR | SCHINDLER, DAVID M | 9d overdue |
| 18838524 | CAPACITOR, METHOD OF MANUFACTURING THEREOF AND USE THEREOF | SINCLAIR, DAVID M | 12d |
| 18664446 | MAGNETORESISTIVE DEVICE AND METHOD FOR MANUFACTURING THE SAME, AND MAGNETIC SENSOR | SCHINDLER, DAVID M | 13d |
| 17583681 | MULTILAYER ELECTRONIC COMPONENT | CHAN, TSZFUNG JACKIE | 28d |
| 18743261 | MAGNETIC SENSOR DEVICE | SCHINDLER, DAVID M | 34d |
| 18743760 | MULTILAYER COIL COMPONENT | CHAN, TSZFUNG JACKIE | 40d |
| 19051294 | MAGNETIC DETECTION DEVICE, MAGNETIC DETECTION MODULE, MAGNETIC DETECTION SYSTEM, GEAR DRIVING DETECTION DEVICE, MOTOR DRIVING DETECTION DEVICE, AND ENCODER | SCHINDLER, DAVID M | — |
| Art Unit | Apps |
|---|---|
| 2837 | 24 |
| 2858 | 20 |
| 2843 | 7 |
| 2847 | 7 |
| 2872 | 7 |
| 2874 | 4 |
| 1735 | 4 |
| 1785 | 4 |
| 2852 | 3 |
| 2871 | 3 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19228843 | SENSOR UNIT | RIOS RUSSO, RAUL J | 2858 | §112 | Non-Final OA | — | Pending | Jun 05, 2025 |
| 19207608 | OPTICAL MEMBER DRIVING MECHANISM | MAHONEY, CHRISTOPHER E | 2852 | §101§102§103§112 | Non-Final OA | — | Pending | May 14, 2025 |
| 19207842 | OPTICAL MEMBER DRIVING MECHANISM | NAZRUL, SHAHBAZ | 2638 | §102 | Non-Final OA | — | Pending | May 14, 2025 |
| 19188124 | COMMON MODE FILTER | LEE, BENNY T | 2843 | §103§112 | Non-Final OA | — | Pending | Apr 24, 2025 |
| 19093195 | DC-DC CONVERTER AND POWER SUPPLY CIRCUIT | COMAS TORRES, YAHVEH | 2838 | §103 | Non-Final OA | — | Pending | Mar 27, 2025 |
| 19115416 | SUBSTRATE PROCESSING DEVICE | WRIGHT, ALEXANDER SCOTT | 1745 | §102§112 | Non-Final OA | — | Pending | Mar 26, 2025 |
| 19086334 | MULTILAYERED BRANCHING FILTER | COLE, VICTOR | 2843 | §102 | Non-Final OA | — | Pending | Mar 21, 2025 |
| 19079187 | OPTICAL SENSOR, RECEIVER DEVICE, TRANSCEIVER DEVICE, COMMUNICATION SYSTEM, TERMINAL DEVICE, AND OPTICAL SYSTEM | TABA, MONICA TERESA | 2878 | §103 | Non-Final OA | — | Pending | Mar 13, 2025 |
| 19076672 | MULTILAYER CERAMIC ELECTRONIC DEVICE | THOMAS, ERIC W | 2847 | §102§103§112 | Non-Final OA | — | Pending | Mar 11, 2025 |
| 19071894 | MAGNETIC SENSOR | AURORA, REENA | 2858 | §112 | Non-Final OA | — | Pending | Mar 06, 2025 |
| 19066673 | ROTARY SENSOR DEVICE, ROTARY SENSOR UNIT, AND INSTALLATION METHOD FOR ROTARY SENSOR DEVICE | YENINAS, STEVEN LEE | 2858 | §102§103§112 | Non-Final OA | — | Pending | Feb 28, 2025 |
| 19057109 | MAGNETIC SENSOR | MONSUR, NASIMA | 2858 | §102§103§112 | Non-Final OA | — | Pending | Feb 19, 2025 |
| 19051294 | MAGNETIC DETECTION DEVICE, MAGNETIC DETECTION MODULE, MAGNETIC DETECTION SYSTEM, GEAR DRIVING DETECTION DEVICE, MOTOR DRIVING DETECTION DEVICE, AND ENCODER | SCHINDLER, DAVID M | 2858 | §102§103§112 | Non-Final OA | — | Pending | Feb 12, 2025 |
| 19050189 | MAGNETIC SENSOR | TCHATCHOUANG, CARL F.R. | 2858 | §103 | Non-Final OA | — | Pending | Feb 11, 2025 |
| 19045759 | ELECTROMAGNETIC WAVE SENSOR | DOWNING, SAVANNAH STARR | 2884 | §103§112 | Non-Final OA | — | Pending | Feb 05, 2025 |
| 19042173 | MAGNETIC FIELD MEASUREMENT DEVICE | FERDOUS, ZANNATUL | 2858 | §103 | Non-Final OA | — | Pending | Jan 31, 2025 |
| 18998884 | POLYMER, THIOPHENE COMPOUND, CONDUCTIVE MEMBER, AND ELECTRONIC PART | NGUYEN, TRI V | 1764 | §112 | Non-Final OA | — | Pending | Jan 27, 2025 |
| 19033856 | MAGNETIC SENSOR | FORTICH, ALVARO E | 2858 | §103 | Non-Final OA | — | Pending | Jan 22, 2025 |
| 19033759 | MAGNETIC SENSOR | RHODES-VIVOUR, TEMILADE S | 2858 | §102§103 | Non-Final OA | — | Pending | Jan 22, 2025 |
| 19007843 | MAGNETIC FIELD DETECTION SYSTEM | PATEL, PARESH H | 2858 | §103Other | Non-Final OA | — | Pending | Jan 02, 2025 |
| 18962410 | ELECTRONIC COMPONENT | FERGUSON, DION | 2847 | §102 | Non-Final OA | — | Pending | Nov 27, 2024 |
| 18956578 | TRANSMISSION DEVICE, INFORMATION TERMINAL, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD | BARUA, PRANESH K | 2635 | §112DP | Non-Final OA | — | Pending | Nov 22, 2024 |
| 18947252 | MAGNETORESISTIVE EFFECT ELEMENT, MAGNETIC FIELD DETECTION DEVICE, AND MAGNETIC SENSOR SYSTEM | HOLLINGTON, JERMELE M | 2858 | §102§103§112 | Non-Final OA | — | Pending | Nov 14, 2024 |
| 18938803 | MAGNETIC SENSOR DEVICE AND MAGNETIC SENSOR SYSTEM | NASIR, TAQI R | 2858 | §103 | Non-Final OA | — | Pending | Nov 06, 2024 |
| 18937697 | CIRCUIT BOARD AND METHOD FOR MANUFACTURING MOUNTING BOARD | DINH, TUAN T | 2847 | §102§103 | Non-Final OA | — | Pending | Nov 05, 2024 |
| 18933048 | CAPACITOR | FERGUSON, DION | — | §102§103 | Non-Final OA | — | Pending | Oct 31, 2024 |
| 18932913 | SENSOR | ALLGOOD, ALESA M | 2858 | §103Other | Non-Final OA | — | Pending | Oct 31, 2024 |
| 18915382 | SIGNAL PROCESSING CIRCUIT AND SENSOR UNIT | NGUYEN, LONG T | 2842 | §102 | Final Rejection | 19d | Pending | Oct 15, 2024 |
| 18856142 | MAGNETIC FIELD DETECTION SYSTEM | ZAKARIA, AKM | 2858 | §102§103§112 | Final Rejection | — | Pending | Oct 11, 2024 |
| 18910435 | MULTILAYER FILTER DEVICE | OUTTEN, SAMUEL S | 2843 | §103 | Non-Final OA | 68d | Pending | Oct 09, 2024 |
| 18898794 | SOFT MAGNETIC METAL PARTICLE, DUST CORE, AND MAGNETIC COMPONENT | SHAH, SAMIR | 1787 | §103 | Non-Final OA | — | Pending | Sep 27, 2024 |
| 18850281 | INFORMATION PROCESSING DEVICE | HUYNH, KIM T | 2184 | §103 | Final Rejection | — | Pending | Sep 24, 2024 |
| 18891242 | JUNCTION BARRIER SCHOTTKY DIODE | MCCALL SHEPARD, SONYA D | 2898 | §102 | Non-Final OA | — | Pending | Sep 20, 2024 |
| 18849103 | OPTICAL MODULATION ELEMENT | WONG, TINA MEI SENG | 2874 | §102§103 | Non-Final OA | — | Pending | Sep 20, 2024 |
| 18891694 | NEUROMORPHIC DEVICE | MILLER, JAMI VALENTINE | 2818 | §102§103 | Non-Final OA | — | Pending | Sep 20, 2024 |
| 18891263 | METASURFACE REFLECTOR, PROJECTION DEVICE, AND NEAR-EYE WEARABLE DEVICE | GROSS, ALEXANDER P | 2871 | §103Other | Non-Final OA | — | Pending | Sep 20, 2024 |
| 18883273 | OPTICAL ELEMENT, LASER MODULE, RETINAL PROJECTION DEVICE, AND NEAR-EYE WEARABLE DEVICE | CHANG, AUDREY Y | 2872 | §103 | Final Rejection | — | Pending | Sep 12, 2024 |
| 18841838 | THIN FILM CAPACITOR AND ELECTRONIC CIRCUIT BOARD HAVING THE SAME | FREAL, JOHN BRENDAN | — | §102§103 | Non-Final OA | — | Pending | Aug 27, 2024 |
| 18840684 | SENSOR CHIP, MAGNETIC SENSOR HAVING THE SAME, AND MAGNETIC SENSOR MANUFACTURING METHOD | FREDERIKSEN, DAVID B | 2858 | §112 | Final Rejection | — | Pending | Aug 22, 2024 |
| 18804885 | ELECTRONIC COMPONENT | RAMASWAMY, ARUN | 2847 | §103 | Final Rejection | — | Pending | Aug 14, 2024 |
| 18798050 | MAPPING APPARATUS AND LOAD PORT APPARATUS | MYERS, GLENN F | 3652 | §102§103 | Non-Final OA | — | Pending | Aug 08, 2024 |
| 18292120 | CALCULATION MODEL, INFORMATION PROCESSING METHOD, STORAGE MEDIUM, AND INFORMATION PROCESSING DEVICE | ALGIBHAH, MAHER N | 2165 | §101§103 | Non-Final OA | — | Pending | Aug 02, 2024 |
| 18835156 | SENSOR ELEMENT AND MANUFACTURING METHOD THEREFOR | FREDERIKSEN, DAVID B | 2858 | §102§103 | Final Rejection | 14d | Pending | Aug 01, 2024 |
| 18784000 | NODE AND RESERVOIR DEVICE | DAY, ROBERT N | 2122 | §102§103 | Non-Final OA | — | Pending | Jul 25, 2024 |
| 18773891 | MULTILAYER FEEDTHROUGH CAPACITOR | TORRES, TIMOTHY JOSEPH | 2848 | §102 | Final Rejection | 50d | Pending | Jul 16, 2024 |
| 18771471 | SPIN CURRENT MAGNETIZATION ROTATIONAL ELEMENT, SPIN CURRENT MAGNETIZATION ROTATIONAL TYPE MAGNETORESISTIVE ELEMENT, MAGNETIC MEMORY, AND MAGNETIZATION ROTATION METHOD | TRAN, MICHAEL THANH | 2827 | §112DPOther | Non-Final OA | — | Pending | Jul 12, 2024 |
| 18727780 | BATTERY | CORNO JR, JAMES ANTHONY JOHN | 1722 | §103§112 | Non-Final OA | — | Pending | Jul 10, 2024 |
| 18756651 | ELECTRO-OPTICAL ELEMENT, LIGHT SOURCE MODULE, OPTICAL ENGINE, AND XR GLASSES | CAPUTO, LISA M | 2874 | §102 | Non-Final OA | — | Pending | Jun 27, 2024 |
| 18724660 | SOFT MAGNETIC ALLOY AND MAGNETIC COMPONENT | MCGUTHRY BANKS, TIMA MICHELE | 1733 | §112 | Non-Final OA | — | Pending | Jun 27, 2024 |
| 18754832 | THIN FILM CAPACITOR, SUBSTRATE, AND ELECTRONIC DEVICE | THOMAS, ERIC W | 2848 | §102§103 | Final Rejection | 62d | Pending | Jun 26, 2024 |
IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.
Start Free TrialTDK Corporation has 170 pending office actions as of October 2026, spread across 73 art units and 134 examiners.
Tszfung Jackie Chan has the most, with 5 of TDK Corporation's pending office actions.
Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.