Prosecution Insights
Prosecution Insights
Technology areas: Transportation, E-Commerce & Mechanical Systems • Medical Devices & Mechanical Engineering
62 pending office actions • 28 art units • 54 examiners • 0 of 62 (0%) have an AI response strategy ready • 339 patents granted in the last 365 days
Pratt & Whitney Canada Corp. is currently navigating 62 pending office actions in the Medical Devices & Mechanical Engineering technology area. These actions involve 54 distinct examiners and 28 distinct art units, showing that the company's mechanical innovations are being scrutinized by a wide array of USPTO personnel. The ratio of 62 actions to 54 examiners indicates that very few examiners are handling more than one case for the company.
KESSLER, CHRISTOPHER S is the busiest examiner for the portfolio, overseeing 4 pending office actions. With 62 total pending office actions spread across 28 distinct art units, the company's prosecution team must manage a diverse set of technical requirements and examiner styles. The relatively high number of art units for a portfolio of this size suggests a broad technical scope within the mechanical engineering field. Practitioners must be prepared to adapt their arguments to the specific cultures of 28 different art units while addressing the individual preferences of 54 different examiners.
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 only | 1 (2%) |
| §101 + other | 1 (2%) |
| §103 only | 25 (40%) |
| §102 only | 2 (3%) |
| §112 only | 7 (11%) |
| Multi-statute (no §101) | 26 (42%) |
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 |
|---|---|---|---|
| KESSLER, CHRISTOPHER S | 4 | 60.1% | +14.4% |
| OLYNICK, DAVID | 2 | 78.2% | +23.4% |
| KIM, TAE JUN | 2 | 64.0% | +25.7% |
| MEILLER, SEAN V | 2 | 73.9% | +38.1% |
| SILVA, FRANK ALEXIS | 2 | 29.5% | +54.6% |
| MEADE, LORNE EDWARD | 2 | 51.4% | +38.7% |
| ZAMORA ALVAREZ, ERIC J | 1 | 88.6% | +21.4% |
| GREEN, RICHARD R | 1 | 74.6% | +22.8% |
| RIEGELMAN, MICHAEL A | 1 | 78.2% | +14.7% |
| NICHOLS, PHYLLIS M | 1 | 79.2% | +19.7% |
Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 19420073 | FLANGE WITH STRESS ATTENTUATION FEATURE | ZAMORA ALVAREZ, ERIC J | — |
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 |
|---|---|---|---|
| 18594925 | ENERGY GENERATING DEVICE | MEILLER, SEAN V | 43d overdue |
| 17942045 | ADAPTIVE MANUFACTURING USING CT SCAN DATA | KOSSEK, MAGDALENA IZABELLA | 31d overdue |
| 18807515 | ENGINE FUEL NOZZLE WITH COAXIAL FUEL AND AIR FLOWS | KIM, TAE JUN | 8d |
| 18367078 | METHOD OF MANUFACTURING A METAL INJECTION MOLDED PART | SMITH, CATHERINE P | 22d |
| 18377186 | CIRCUMFERENTIALLY TAILORED INLET GUARD FOR AN AIRCRAFT ENGINE INLET | MEADE, LORNE EDWARD | 28d |
| 18514524 | AIR SYSTEM FOR ELECTRICAL POWER STORAGE ONBOARD AN AIRCRAFT | MALLON, BRETT PETERSON | 34d |
| 19310222 | CLUTCHED ELECTRIC POWERPLANT FOR AIRCRAFT PROPULSION SYSTEM | GREEN, RICHARD R | — |
| 19189991 | BYPASS VALVE | RIEGELMAN, MICHAEL A | — |
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 |
|---|---|---|---|
| 18594925 | ENERGY GENERATING DEVICE | MEILLER, SEAN V | 43d overdue |
| 18654335 | PARTIAL-ADMISSION TURBINE ASSEMBLY FOR AN AIRCRAFT AND METHOD FOR CONTROLLING SAME | KIM, TAE JUN | 15d overdue |
| 18211100 | SYSTEM AND METHOD FOR TURBINE ENGINE TURBINE COMPONENT COOLING | MEILLER, SEAN V | 2d overdue |
| 17866103 | AIRCRAFT PROPULSION SYSTEM WITH INTERMITTENT COMBUSTION ENGINE(S) | MEADE, LORNE EDWARD | 2d overdue |
| 18807515 | ENGINE FUEL NOZZLE WITH COAXIAL FUEL AND AIR FLOWS | KIM, TAE JUN | 8d |
| 18116580 | ADAPTIVE MANUFACTURING USING A CT SCAN AND AN ADAPTIVE MANUFACTURING TOOLPATH | KESSLER, CHRISTOPHER S | 27d |
| 18116559 | ADAPTIVE OVERHAUL USING CT SCAN SINGLE DATA SET | KESSLER, CHRISTOPHER S | 27d |
| 18116588 | ADAPTIVE MANUFACTURING USING AN ADAPTIVE MANUFACTURING TOOLPATH | KESSLER, CHRISTOPHER S | 27d |
| Art Unit | Apps |
|---|---|
| 3741 | 11 |
| 3745 | 6 |
| 1759 | 4 |
| 3763 | 3 |
| 3753 | 2 |
| 3632 | 2 |
| 3799 | 2 |
| 3647 | 1 |
| 3654 | 1 |
| 3617 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19420073 | FLANGE WITH STRESS ATTENTUATION FEATURE | ZAMORA ALVAREZ, ERIC J | 3745 | §103 | Non-Final OA | — | Pending | Dec 15, 2025 |
| 19310222 | CLUTCHED ELECTRIC POWERPLANT FOR AIRCRAFT PROPULSION SYSTEM | GREEN, RICHARD R | 3647 | §102§103 | Non-Final OA | — | Pending | Aug 26, 2025 |
| 19189991 | BYPASS VALVE | RIEGELMAN, MICHAEL A | 3654 | §102§103 | Non-Final OA | — | Pending | Apr 25, 2025 |
| 19096066 | MULTI-ADJUSTABLE VALVE FOR A LUBRICATION SYSTEM | NICHOLS, PHYLLIS M | 3753 | §101 | Non-Final OA | — | Pending | Mar 31, 2025 |
| 19068794 | Hybrid Electric Propulsion System with Start Sequence and Shutdown Sequence | SUNG, GERALD LUTHER | 3741 | §112 | Non-Final OA | — | Pending | Mar 03, 2025 |
| 19048332 | METHOD AND APPARATUS FOR ENGINE HOT SECTION MAINTENANCE | MARSH, STEVEN M | 3632 | §112 | Non-Final OA | — | Pending | Feb 07, 2025 |
| 19044310 | FLEX COUPLER FOR HYBRID GAS TURBINE ENGINE POWERPLANT | OLYNICK, DAVID | — | §102§103 | Non-Final OA | — | Pending | Feb 03, 2025 |
| 19013550 | ROLLER BEARING COMPLIANT RACEWAY UNDERCUT | WAITS, ALAN B | 3617 | §102§103§112 | Non-Final OA | — | Pending | Jan 08, 2025 |
| 18973948 | INTERNAL COMBUSTION ENGINE WITH MONOLITHIC PILOT CHAMBER STRUCTURE | NGUYEN, HOANG M | — | §102§103 | Non-Final OA | — | Pending | Dec 09, 2024 |
| 18947589 | ASYMMETRIC GEAR TEETH FOR GEARBOX | MACARTHUR, VICTOR L | 3618 | §103§112 | Final Rejection | — | Pending | Nov 14, 2024 |
| 18934863 | SHAFT ASSEMBLY FOR A GAS TURBINE ENGINE | CHRISTENSEN, DANIELLE M | 3745 | §102 | Non-Final OA | — | Pending | Nov 01, 2024 |
| 18918632 | ANTI-ROTATION TOOL FOR AIRCRAFT ENGINE ROTATIONAL EQUIPMENT | TRAVERS, MATTHEW P | 3726 | §103§112 | Non-Final OA | — | Pending | Oct 17, 2024 |
| 18913888 | BATTERY MANAGEMENT SYSTEM TEMPERATURE SENSING SYSTEMS AND METHODS | PEDERSEN, DAVID RUBEN | 3658 | §103 | Final Rejection | — | Pending | Oct 11, 2024 |
| 18909569 | POWERPLANT JACKING INSERT WITH EXTERIOR AND INTERIOR THREADS | LAMBERT, WAYNE A | 3745 | §103 | Non-Final OA | — | Pending | Oct 08, 2024 |
| 18893353 | AIRCRAFT ENGINE OIL JET WITH INDUCED SWIRLING | OLYNICK, DAVID | 3741 | §103 | Final Rejection | — | Pending | Sep 23, 2024 |
| 18821274 | SPILL RETURN FUEL NOZZLES FOR USAGE AS START NOZZLES | KANG, EDWIN G | 3741 | §102§103§112 | Non-Final OA | — | Pending | Aug 30, 2024 |
| 18807515 | ENGINE FUEL NOZZLE WITH COAXIAL FUEL AND AIR FLOWS | KIM, TAE JUN | 3799 | §102§103§112 | Non-Final OA | 8d | Pending | Aug 16, 2024 |
| 18795587 | SPOOL VALVE FOR AIRCRAFT ENGINE | CARY, KELSEY E | 3753 | §102§103 | Final Rejection | — | Pending | Aug 06, 2024 |
| 18781576 | AIRCRAFT EXTERNAL POWER ASSEMBLY, GROUND-BASED POWER ASSEMBLY, AND METHOD FOR OPERATING SAME | DANGOL, ASHESH | 3642 | §103 | Non-Final OA | — | Pending | Jul 23, 2024 |
| 18736838 | PULSE-MANAGED PLASMA METHOD FOR COATING ON INTERNAL SURFACES OF WORKPIECES | TUROCY, DAVID P | 1718 | §103 | Non-Final OA | — | Pending | Jun 07, 2024 |
| 18733040 | METHOD OF MANUFACTURING A PART OF AN AIRCRAFT ENGINE, AND SYSTEM THEREFOR | ISLAM, MOHAMMAD K | — | §102§112 | Non-Final OA | — | Pending | Jun 04, 2024 |
| 18664857 | FILTER ASSEMBLY FOR AN AIRCRAFT ENGINE | MCGANN, BERNADETTE KAREN | — | §103 | Non-Final OA | — | Pending | May 15, 2024 |
| 18654335 | PARTIAL-ADMISSION TURBINE ASSEMBLY FOR AN AIRCRAFT AND METHOD FOR CONTROLLING SAME | KIM, TAE JUN | 3799 | §103 | Non-Final OA | 15d overdue | Pending | May 03, 2024 |
| 18649208 | HEAT EXCHANGER HAVING A MIXING CHAMBER WITH LOUVERS | RUPPERT, ERIC S | 3763 | §103 | Non-Final OA | — | Pending | Apr 29, 2024 |
| 18649180 | HEAT EXCHANGER HAVING A MIXING CHAMBER WITH CONVERGENT SECTION | LING, FOR K. | 3763 | §103§112 | Non-Final OA | — | Pending | Apr 29, 2024 |
| 18635743 | MOUNTING COMPONENTS FOR A POWERPLANT FLUID SYSTEM | WALTHOUR, SCOTT J | 3632 | §102§103 | Non-Final OA | — | Pending | Apr 15, 2024 |
| 18634181 | PISTON RING WITH INTEGRATED ANTI-ROTATION FEATURE | FOSTER, NICHOLAS L | 3675 | §102§103 | Final Rejection | — | Pending | Apr 12, 2024 |
| 18631522 | RAW MATERIAL BUILD-UP USING ADDITIVE MANUFACTURING | MCGUTHRY BANKS, TIMA MICHELE | — | §102§103 | Non-Final OA | — | Pending | Apr 10, 2024 |
| 18623673 | RIVETING TOOL YOKE | TOLAN, EDWARD THOMAS | 3725 | §103 | Non-Final OA | 16d overdue | Pending | Apr 01, 2024 |
| 18610505 | SYSTEM AND METHOD FOR ESTIMATING A SERVICE LIFE OF A COMPONENT OF AN AIRCRAFT POWER PLANT | LEE, SANGKYUNG | — | §101§103 | Non-Final OA | — | Pending | Mar 20, 2024 |
| 18600204 | AIRCRAFT ACOUSTIC PANEL WITH INTEGRATED FIRE-RESISTANT MATERIAL | LUKS, JEREMY AUSTIN | 2837 | §103 | Non-Final OA | 29d | Pending | Mar 08, 2024 |
| 18594925 | ENERGY GENERATING DEVICE | MEILLER, SEAN V | 3741 | §103§112 | Non-Final OA | 43d overdue | Pending | Mar 04, 2024 |
| 18444871 | SYSTEM AND METHOD FOR DETECTING A PERFORMANCE DEGRADATION OF A BLEED-OFF VALVE | SHABMAN, MARK A | 2855 | §112 | Non-Final OA | — | Pending | Feb 19, 2024 |
| 18441453 | GAS TURBINE ENGINE CONFIGURATION FOR CONTAINMENT TESTING | WONG, ELTON K | 3745 | §103 | Final Rejection | — | Pending | Feb 14, 2024 |
| 18435601 | SYSTEM AND METHOD FOR CONTROLLING AN AIRCRAFT BATTERY ASSEMBLY | SILVA, FRANK ALEXIS | — | §102§103 | Non-Final OA | — | Pending | Feb 07, 2024 |
| 18435580 | AIRCRAFT BATTERY CHARGING SYSTEM AND METHOD | SILVA, FRANK ALEXIS | — | §103 | Non-Final OA | — | Pending | Feb 07, 2024 |
| 18435563 | AIRCRAFT BATTERY CHARGING SYSTEM AND METHOD | FUREMAN, JARED | — | §102§103 | Non-Final OA | — | Pending | Feb 07, 2024 |
| 18420127 | IMPELLER CONTAINMENT SYSTEM | GOLIK, ARTHUR PAUL | 3745 | §103 | Non-Final OA | — | Pending | Jan 23, 2024 |
| 18405113 | TORQUE MEASUREMENT SYSTEM FOR AIRCRAFT ENGINES | PARCO JR, RUBEN C | 2853 | §103 | Non-Final OA | — | Pending | Jan 05, 2024 |
| 18404324 | AUGMENTED REALITY ASSISTED BORESCOPE INSPECTION OF TURBOMACHINERY ENGINES AND RELATED COMPONENTS | TUCKER, WESLEY J | 2661 | §103 | Non-Final OA | — | Pending | Jan 04, 2024 |
| 18397120 | POLISHING BLADED ROTOR USING ROBOTIC POLISHING DEVICE | DELRUE, BRIAN CHRISTOPHER | 3745 | §103 | Final Rejection | 12d | Pending | Dec 27, 2023 |
| 18514524 | AIR SYSTEM FOR ELECTRICAL POWER STORAGE ONBOARD AN AIRCRAFT | MALLON, BRETT PETERSON | 3762 | §103§112 | Final Rejection | 34d | Pending | Nov 20, 2023 |
| 18388285 | TAILORING ROTOR BLADE SECTOR CONFIGURATIONS TO TUNE GAS TURBINE ENGINE BLADED ROTOR | SEBASCO CHENG, STEPHANIE | 3741 | §102 | Final Rejection | 42d overdue | Pending | Nov 09, 2023 |
| 18495973 | VANE OUTER SHROUD UNDERCUT GROOVE | NGUYEN, ANDREW H | 3741 | §103§112 | Non-Final OA | — | Pending | Oct 27, 2023 |
| 18377453 | ELECTRONIC ITEM MANAGEMENT FOR ITEM STORAGE AREA | GLASS, RUSSELL S | 3627 | §103 | Non-Final OA | 34d | Pending | Oct 06, 2023 |
| 18377475 | ASSEMBLY AND METHOD FOR MACHINING A COMPONENT | PARK, JE HWAN JOHN | — | §103§112 | Non-Final OA | — | Pending | Oct 06, 2023 |
| 18377186 | CIRCUMFERENTIALLY TAILORED INLET GUARD FOR AN AIRCRAFT ENGINE INLET | MEADE, LORNE EDWARD | 3741 | §103§112 | Final Rejection | 28d | Pending | Oct 05, 2023 |
| 18372485 | SYSTEM AND METHOD FOR IDENTIFYING RUBBING CONDITIONS FOR ENGINE ROTATIONAL EQUIPMENT | GEIST, RICHARD EDWIN | 3665 | §103 | Final Rejection | 3d overdue | Pending | Sep 25, 2023 |
| 18367288 | VENTED HYDROGEN FUEL RESERVOIR FOR AIRCRAFT ENGINE | RAYMOND, KEITH MICHAEL | 3798 | §103 | Final Rejection | 45d overdue | Pending | Sep 12, 2023 |
| 18367078 | METHOD OF MANUFACTURING A METAL INJECTION MOLDED PART | SMITH, CATHERINE P | 1735 | §103§112 | Final Rejection | 22d | Pending | Sep 12, 2023 |
| 18211100 | SYSTEM AND METHOD FOR TURBINE ENGINE TURBINE COMPONENT COOLING | MEILLER, SEAN V | 3741 | §103 | Non-Final OA | 2d overdue | Pending | Jun 16, 2023 |
| 18334494 | AIRCRAFT AND ASSOCIATED METHOD OF CONDITIONING CABIN AIR | JONES, GORDON A | 3763 | §103 | Final Rejection | — | Pending | Jun 14, 2023 |
| 18204131 | SYSTEM AND METHOD FOR GENERATING ASSEMBLY INSTRUCTIONS FOR A PLURALITY OF 3D COMPONENT MODELS | TSENG, KYLE HWA-KAI | — | §103 | Non-Final OA | — | Pending | May 31, 2023 |
| 18326233 | AUTOMATIC ADJUSTMENT OF PARAMETERS BASED ON PART SURFACE REFLECTIVE INDEX FOR POINT CLOUD ACQUISITION USING A BLUE LIGHT SCANNER | MAHROUKA, WASSIM | 2665 | §103§112 | Non-Final OA | — | Pending | May 31, 2023 |
| 18129640 | POWER COUPLING BETWEEN ENGINE ROTATING ASSEMBLY AND EXTERNAL DEVICE | AMAR, MARC J | 3741 | §103 | Non-Final OA | 5d | Pending | Mar 31, 2023 |
| 18116580 | ADAPTIVE MANUFACTURING USING A CT SCAN AND AN ADAPTIVE MANUFACTURING TOOLPATH | KESSLER, CHRISTOPHER S | 1759 | §112Other | Non-Final OA | 27d | Pending | Mar 02, 2023 |
| 18116559 | ADAPTIVE OVERHAUL USING CT SCAN SINGLE DATA SET | KESSLER, CHRISTOPHER S | 1759 | §112Other | Non-Final OA | 27d | Pending | Mar 02, 2023 |
| 18116588 | ADAPTIVE MANUFACTURING USING AN ADAPTIVE MANUFACTURING TOOLPATH | KESSLER, CHRISTOPHER S | 1759 | §112Other | Non-Final OA | 27d | Pending | Mar 02, 2023 |
| 18108132 | ADAPTIVE OVERHAUL USING STRUCTURED LIGHT SINGLE DATA SET | KESSLER, CHRISTOPHER S | 1759 | §112Other | Non-Final OA | 27d | Pending | Feb 10, 2023 |
| 18151747 | ACCESSORY GEARBOX COVER LINKAGES | BURKE, THOMAS P | 3741 | §103§112 | Final Rejection | — | Pending | Jan 09, 2023 |
| 17942045 | ADAPTIVE MANUFACTURING USING CT SCAN DATA | KOSSEK, MAGDALENA IZABELLA | 2117 | §103§112Other | Non-Final OA | 31d overdue | Pending | Sep 09, 2022 |
| 17866103 | AIRCRAFT PROPULSION SYSTEM WITH INTERMITTENT COMBUSTION ENGINE(S) | MEADE, LORNE EDWARD | 3741 | §103 | Final Rejection | 2d overdue | Pending | Jul 15, 2022 |
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