Prosecution Insights
Prosecution Insights
Technology area: Chemistry & Materials
104 pending office actions • 39 art units • 85 examiners • 0 of 104 (0%) have an AI response strategy ready • 88 patents granted in the last 365 days
Mitsubishi Chemical Corporation maintains a significant presence in the Chemistry & Materials technology area with 102 pending office actions. This volume of active matters is distributed among 87 distinct examiners, reflecting a broad engagement with the patent office's personnel. The portfolio's technical diversity is further evidenced by its presence in 28 distinct art units, necessitating a sophisticated management strategy to handle the varied examination standards across these different groups. The busiest examiner, BAREFORD, KATHERINE A, is currently handling 3 pending office actions.
A practitioner managing this portfolio must account for the 87 distinct examiners involved in the review process. The presence of 28 distinct art units indicates a high level of technical variety within the Chemistry & Materials sector. Because the busiest examiner pending count of 3 is a small fraction of the 102 total pending office actions, no single examiner has a dominant influence over the portfolio. This decentralized structure requires a versatile prosecution strategy to address the varied standards of the 28 distinct art units. The large number of 87 distinct examiners suggests that the company's patent outcomes are subject to many different individual perspectives and examination styles, making the monitoring of art unit-wide trends as important as individual examiner habits.
Based on the USPTO statutory response window for each pending office action. 21 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. 21 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 + other | 1 (1%) |
| §103 only | 43 (41%) |
| §102 only | 5 (5%) |
| §112 only | 3 (3%) |
| Double-patenting only | 1 (1%) |
| Double-patenting + other | 3 (3%) |
| Multi-statute (no §101) | 48 (46%) |
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 |
|---|---|---|---|
| REDDY, KARUNA P | 4 | 42.6% | +10.4% |
| BAREFORD, KATHERINE A | 3 | 13.9% | +28.6% |
| KOLB, KATARZYNA I | 3 | 45.5% | +16.2% |
| CAI, WENWEN | 3 | 59.9% | +19.4% |
| XU, JIANGTIAN | 2 | 65.1% | +34.9% |
| SULTANA, NAHIDA | 2 | 78.3% | +9.0% |
| CARTER, JONATHAN LANGDON | 2 | 100.0% | +0.0% |
| DUCHENEAUX, FRANK D | 2 | 45.1% | -14.3% |
| LISTVOYB, GREGORY | 2 | 66.9% | +29.5% |
| DARLING, DEVIN MITCHELL | 2 | 60.0% | +18.7% |
Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 2 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 18989948 | SILICA PARTICLES, PRODUCTION METHOD THEREFOR, SILICA SOL, POLISHING COMPOSITION, POLISHING METHOD, METHOD FOR PRODUCING SEMICONDUCTOR WAFER, AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE | CARTER, JONATHAN LANGDON | — |
| 18659733 | CLEANING LIQUID FOR REMOVING CERIUM COMPOUND, CLEANING METHOD, AND METHOD FOR PRODUCING SEMICONDUCTOR WAFER | CARTER, JONATHAN LANGDON | — |
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 |
|---|---|---|---|
| 17814718 | CONDUCTIVE COMPOSITE, RESIST COATING MATERIAL, RESIST, AND METHOD FOR FORMING RESIST PATTERN | CHU, JOHN S Y | 155d overdue |
| 18048653 | FERMENTED MILK AND METHOD FOR PRODUCING SAME | MERRIAM, ANDREW E | 126d overdue |
| 18788071 | UNIAXIALLY STRETCHED MULTILAYER STRUCTURE AND METHOD OF PRODUCING THE SAME | MILLER, BETHANY MACKENZIE | 5d |
| 18643681 | INFORMATION GENERATION METHOD, RECYCLING METHOD, INFORMATION GENERATION DEVICE, AND RECYCLING DEVICE | RUHL, DENNIS WILLIAM | 7d |
| 18885956 | MANUFACTURING METHOD OF QUARTZ MEMBER, METHOD FOR FORMING SILICA COATING, AND METHOD FOR SMOOTHING SURFACE OF QUARTZ MEMBER | BAREFORD, KATHERINE A | 12d |
| 17896844 | Copolymer, Resin Composition, Molded Product, Filmy Molded Product, and Method for Producing Copolymer | BLEDSOE, JOSHUA CALEB | 16d |
| 17945185 | SMC Manufacturing Method | BAREFORD, KATHERINE A | 19d |
| 17480585 | MULTILAYER STRUCTURE AND PACKAGE | SHAH, SAMIR | 27d |
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 |
|---|---|---|---|
| 17988095 | ETHYLENE-VINYL ALCOHOL COPOLYMER RESIN COMPOSITION, MULTILAYER STRUCTURE, AND PACKAGE | CAI, WENWEN | 30d overdue |
| 18885956 | MANUFACTURING METHOD OF QUARTZ MEMBER, METHOD FOR FORMING SILICA COATING, AND METHOD FOR SMOOTHING SURFACE OF QUARTZ MEMBER | BAREFORD, KATHERINE A | 12d |
| 17945185 | SMC Manufacturing Method | BAREFORD, KATHERINE A | 19d |
| 17072092 | CURABLE COMPOSITION, CURED PRODUCT, AND STACKED BODY | REDDY, KARUNA P | 29d |
| 18829394 | MANUFACTURING METHOD OF QUARTZ MEMBER, AND METHOD FOR SPRAY COATING SILICA POWDER | BAREFORD, KATHERINE A | 84d |
| 19062622 | ADHESIVE AGENT AND ADHESIVE SHEET | XU, JIANGTIAN | — |
| 19045926 | COPOLYMER FOR SUPPRESSING PROTEIN ADSORPTION, METHOD FOR PRODUCING COPOLYMER, RESIN MODIFIER, MOLDING MATERIAL, COPOLYMER-CONTAINING COMPOSITION, COATING FILM, AND ARTICLE | XU, JIANGTIAN | — |
| 18735757 | CURABLE COMPOSITION, MOLDED BODY, SILICONE HYDROGEL, METHOD FOR PRODUCING SILICONE HYDROGEL, AND MACROMONOMER | LISTVOYB, GREGORY | — |
| Art Unit | Apps |
|---|---|
| 1764 | 9 |
| 1763 | 9 |
| 1787 | 7 |
| 1766 | 7 |
| 1762 | 6 |
| 1765 | 5 |
| 1767 | 5 |
| 1788 | 4 |
| 1791 | 3 |
| 1718 | 3 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19229015 | METHOD FOR PRODUCING SHEET PREPREG, METHOD FOR SUPPLYING FIBER RAW MATERIAL, AND SHEET PREPREG | JOHNSON, CHRISTINA ANN | 1742 | §103§112 | Non-Final OA | — | Pending | Jun 05, 2025 |
| 19091406 | METHOD FOR PRODUCING POLYESTER | KENNEDY, TIMOTHY J | — | §102§103§112Other | Non-Final OA | — | Pending | Mar 26, 2025 |
| 19070194 | ADHESIVE SHEET, ADHESIVE SHEET WITH RELEASE FILM USING SAME, LAMINATE FOR IMAGE DISPLAY DEVICE, FLEXIBLE IMAGE DISPLAY DEVICE, ADHESIVE SHEET FOR CONSTITUENT MEMBER OF FLEXIBLE IMAGE DISPLAY DEVICE, AND ADHESIVE COMPOSITION | DICUS, TAMRA | 1787 | §103 | Non-Final OA | — | Pending | Mar 04, 2025 |
| 19062622 | ADHESIVE AGENT AND ADHESIVE SHEET | XU, JIANGTIAN | 1762 | §103 | Final Rejection | — | Pending | Feb 25, 2025 |
| 19059484 | STIRRING AND FEEDING APPARATUS, FEEDING METHOD, AND PRODUCTION METHOD OF FIBROUS FILLER, AND PRODUCTION METHOD OF THERMOPLASTIC RESIN COMPOSITION | SONG, INJA | 1744 | §103 | Non-Final OA | — | Pending | Feb 21, 2025 |
| 19045926 | COPOLYMER FOR SUPPRESSING PROTEIN ADSORPTION, METHOD FOR PRODUCING COPOLYMER, RESIN MODIFIER, MOLDING MATERIAL, COPOLYMER-CONTAINING COMPOSITION, COATING FILM, AND ARTICLE | XU, JIANGTIAN | 1762 | §103 | Non-Final OA | — | Pending | Feb 05, 2025 |
| 19037845 | MULTILAYER STRUCTURE AND METHOD FOR PRODUCING SAME, AUTOMOBILE PART, AIRCRAFT PART, AND DAMPING MATERIAL FOR CARBON-FIBER-REINFORCED PLASTIC | SULTANA, NAHIDA | 1743 | §103 | Non-Final OA | — | Pending | Jan 27, 2025 |
| 19029660 | PREPREG, FIBER-REINFORCED COMPOSITE ARTICLE, AND METHOD OF PRODUCING FIBER-REINFORCED COMPOSITE ARTICLE | MATZEK, MATTHEW D | 1786 | §103 | Non-Final OA | — | Pending | Jan 17, 2025 |
| 19016600 | WATER-SOLUBLE FILM AND CHEMICAL AGENT PACKAGE, AND METHOD FOR PRODUCING CHEMICAL AGENT PACKAGE | PAUL, SHREYA | 1761 | §102§103 | Non-Final OA | — | Pending | Jan 10, 2025 |
| 18999537 | METHOD FOR PRODUCING OPTICAL ELEMENT | NGUYEN, HUNG | 2882 | §103§112 | Non-Final OA | — | Pending | Dec 23, 2024 |
| 18989948 | SILICA PARTICLES, PRODUCTION METHOD THEREFOR, SILICA SOL, POLISHING COMPOSITION, POLISHING METHOD, METHOD FOR PRODUCING SEMICONDUCTOR WAFER, AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE | CARTER, JONATHAN LANGDON | — | §103Other | Non-Final OA | — | Pending | Dec 20, 2024 |
| 18958743 | BIODEGRADABLE LAMINATE | CHEN, VIVIAN | 1787 | §103§112Other | Non-Final OA | — | Pending | Nov 25, 2024 |
| 18952118 | METHOD FOR PRODUCING CARBON FIBER BUNDLE COMPOSITE AND METHOD FOR PRODUCING CARBON FIBER BUNDLE COMPOSITE SHEET | SULTANA, NAHIDA | 1743 | §103 | Final Rejection | — | Pending | Nov 19, 2024 |
| 18926401 | MEAT-LIKE FOOD PRODUCT MODIFIER AND MEAT-LIKE FOOD PRODUCT | RODGERS, ARIEL M | 1792 | §103 | Non-Final OA | — | Pending | Oct 25, 2024 |
| 18906600 | MULTILAYER STRUCTURE, CONTAINER, AND FOOD PACKAGING CONTAINER | SHUKLA, KRUPA | 1787 | §103 | Final Rejection | 17d overdue | Pending | Oct 04, 2024 |
| 18899630 | OIL-IN-WATER TYPE EMULSION COMPOSITION AND BEVERAGE CONTAINING SAME | MERCHLINSKY, JOSEPH CULLEN | 1791 | §103§112 | Non-Final OA | — | Pending | Sep 27, 2024 |
| 18898926 | GaN CRYSTAL AND GaN WAFER | KUNEMUND, ROBERT M | 1714 | §102§103 | Non-Final OA | — | Pending | Sep 27, 2024 |
| 18888483 | MICROBIAL CARRIER AND WATER TREATMENT METHOD | SPIES, BRADLEY R | — | §102§103 | Non-Final OA | — | Pending | Sep 18, 2024 |
| 18885956 | MANUFACTURING METHOD OF QUARTZ MEMBER, METHOD FOR FORMING SILICA COATING, AND METHOD FOR SMOOTHING SURFACE OF QUARTZ MEMBER | BAREFORD, KATHERINE A | 1718 | §103 | Non-Final OA | 12d | Pending | Sep 16, 2024 |
| 18829394 | MANUFACTURING METHOD OF QUARTZ MEMBER, AND METHOD FOR SPRAY COATING SILICA POWDER | BAREFORD, KATHERINE A | 1718 | §103§112 | Final Rejection | 84d | Pending | Sep 10, 2024 |
| 18811225 | GAN EPITAXIAL SUBSTRATE | ARMAND, MARC ANTHONY | 2813 | §103§112 | Non-Final OA | — | Pending | Aug 21, 2024 |
| 18811150 | GAN SUBSTRATE | DUMBRIS, SETH M | — | §103 | Non-Final OA | — | Pending | Aug 21, 2024 |
| 18804184 | SILICA PARTICLES, PRODUCTION METHOD THEREFOR, SILICA SOL, POLISHING COMPOSITION, POLISHING METHOD, METHOD FOR PRODUCING SEMICONDUCTOR WAFER, AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE | LU, JIONG-PING | 1713 | §102 | Non-Final OA | — | Pending | Aug 14, 2024 |
| 18788813 | ADHESIVE SHEET, ADHESIVE SHEET WITH RELEASE FILM, AND ADHESIVE SHEET FOR CONSTITUENT MEMBER OF FLEXIBLE IMAGE DISPLAY DEVICE | DUCHENEAUX, FRANK D | 1788 | §103 | Final Rejection | — | Pending | Jul 30, 2024 |
| 18788071 | UNIAXIALLY STRETCHED MULTILAYER STRUCTURE AND METHOD OF PRODUCING THE SAME | MILLER, BETHANY MACKENZIE | 1787 | §103§112 | Final Rejection | 5d | Pending | Jul 29, 2024 |
| 18772710 | CONDUCTOR, CONDUCTIVE COMPOSITION AND LAMINATE | NGUYEN, TRI V | 1781 | §103 | Non-Final OA | — | Pending | Jul 15, 2024 |
| 18768517 | ADHESIVE TAPE | MANGOHIG, THOMAS A | 1788 | §103DP | Final Rejection | — | Pending | Jul 10, 2024 |
| 18754100 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE, IMAGE FORMATION DEVICE, COATING LIQUID FOR FORMING ELECTROPHOTOGRAPHIC PHOTORECEPTOR PROTECTIVE LAYER, AND COMPOUND | VAJDA, PETER L | — | §102 | Non-Final OA | — | Pending | Jun 25, 2024 |
| 18735757 | CURABLE COMPOSITION, MOLDED BODY, SILICONE HYDROGEL, METHOD FOR PRODUCING SILICONE HYDROGEL, AND MACROMONOMER | LISTVOYB, GREGORY | — | §103 | Non-Final OA | — | Pending | Jun 06, 2024 |
| 18678105 | MULTILAYER FILM, MULTILAYER BODY, PACKAGE AND PACKAGED ARTICLE | AHMED, SHEEBA | 1787 | §102§103 | Non-Final OA | — | Pending | May 30, 2024 |
| 18677572 | RESIN COMPOSITION AND MOLDED ARTICLE | GOLOBOY, JAMES C | 1771 | §102§103§112 | Non-Final OA | — | Pending | May 29, 2024 |
| 18677590 | RESIN COMPOSITION, MOLDED ARTICLE, AND PELLET | KOLB, KATARZYNA I | — | §103§112 | Non-Final OA | — | Pending | May 29, 2024 |
| 18677612 | RESIN COMPOSITION, MOLDED ARTICLE, COMPOSITE, AND METAL-RESIN COMPOSITE | VONCH, JEFFREY A | 1781 | §103 | Final Rejection | — | Pending | May 29, 2024 |
| 18672783 | METHACRYLIC RESIN COMPOSITION FOR INJECTION MOLDING OR EXTRUSION MOLDING, RESIN MOLDED BODY, AND METHOD FOR PRODUCING SAME | DARLING, DEVIN MITCHELL | 1764 | §103§112 | Final Rejection | — | Pending | May 23, 2024 |
| 18669994 | STRUCTURE AND SOLID-STATE IMAGING DEVICE | PRASAD, NEIL R | 2897 | §102§103§112 | Non-Final OA | — | Pending | May 21, 2024 |
| 18659733 | CLEANING LIQUID FOR REMOVING CERIUM COMPOUND, CLEANING METHOD, AND METHOD FOR PRODUCING SEMICONDUCTOR WAFER | CARTER, JONATHAN LANGDON | 1713 | §103 | Non-Final OA | — | Pending | May 09, 2024 |
| 18659739 | HIGH PURITY TIN COMPOUNDS CONTAINING UNSATURATED SUBSTITUENT AND METHOD FOR PREPARATION THEREOF | HINES, LATOSHA D | 1771 | §102 | Non-Final OA | — | Pending | May 09, 2024 |
| 18652055 | MODIFIED ETHYLENE-VINYL ALCOHOL RESIN COMPOSITION, GAS-BARRIER MATERIAL, AND STRETCHED FILM | FISCHER, JUSTIN R | 1749 | §103 | Non-Final OA | — | Pending | May 01, 2024 |
| 18706202 | METHOD FOR PRODUCING FLAME RETARDANT POLYCARBONATE RESIN COMPOSITION PELLETS | BUTCHER, ROBERT T | 1764 | §103§112 | Non-Final OA | — | Pending | Apr 30, 2024 |
| 18646860 | PARTICLES AND METHOD FOR PRODUCING SAME, AND SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME | LYNCH, VICTORIA HOM | 1724 | §102§103 | Non-Final OA | — | Pending | Apr 26, 2024 |
| 18645590 | AQUEOUS RESIN COMPOSITION, IMAGE FORMING METHOD, AND PRINTED MATERIAL | NILAND, PATRICK DENNIS | 1762 | §102§103 | Non-Final OA | — | Pending | Apr 25, 2024 |
| 18643681 | INFORMATION GENERATION METHOD, RECYCLING METHOD, INFORMATION GENERATION DEVICE, AND RECYCLING DEVICE | RUHL, DENNIS WILLIAM | 3626 | §101§102 | Non-Final OA | 7d | Pending | Apr 23, 2024 |
| 18639048 | POLYCARBONATE RESIN COMPOSITION | SERGENT, RABON A | 1765 | §102§103§112 | Non-Final OA | — | Pending | Apr 18, 2024 |
| 18639655 | RESIN COMPOSITION, PRODUCTION METHOD OF RESIN COMPOSITION, MOLDING MATERIAL, AND ARTICLE | PHILLIPS, SAVANNAH GRACE | 1763 | §103§112 | Non-Final OA | — | Pending | Apr 18, 2024 |
| 18627614 | BIODEGRADABLE RESIN COMPOSITION, MOLDED ARTICLE, AND BIOLOGICAL DEGRADATION METHOD | BOYKIN, TERRESSA M | 1765 | §103 | Non-Final OA | — | Pending | Apr 05, 2024 |
| 18627503 | RESIN, RESIN COMPOSITION, AND SHAPED OBJECT | LISTVOYB, GREGORY | 1765 | §103 | Non-Final OA | — | Pending | Apr 05, 2024 |
| 18618361 | PREPREG PRODUCTION METHOD AND PREPREG | STONEHOCKER, VIRGINIA LEE | 1766 | §103§112 | Non-Final OA | — | Pending | Mar 27, 2024 |
| 18444354 | THERMOPLASTIC ELASTOMER COMPOSITION | FEELY, MICHAEL J | 1766 | §103 | Non-Final OA | — | Pending | Feb 16, 2024 |
| 18441376 | RESIN COMPOSITION, MOLDED ARTICLE, MODIFIER FOR ABS RESIN, METHOD FOR MANUFACTURING RESIN COMPOSITION, AND METHOD FOR MODIFYING ABS RESIN | REDDY, KARUNA P | 1764 | §102Other | Non-Final OA | — | Pending | Feb 14, 2024 |
| 18415760 | RESIN COMPOSITION, RESIN SHEET, MULTILAYER BODY, SHEET CURED PRODUCT, AND CIRCUIT BOARD MATERIAL | CAI, WENWEN | 1763 | §102§112 | Non-Final OA | — | Pending | Jan 18, 2024 |
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Start Free TrialMitsubishi Chemical Corporation has 104 pending office actions as of October 2026, spread across 39 art units and 85 examiners.
Karuna P Reddy has the most, with 4 of Mitsubishi Chemical Corporation's pending office actions.
Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.