Prosecution Insights
Prosecution Insights
Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics • Medical Devices & Mechanical Engineering
103 pending office actions • 55 art units • 91 examiners • 0 of 103 (0%) have an AI response strategy ready • 215 patents granted in the last 365 days
Rolls-Royce plc maintains a patent portfolio in the Medical Devices & Mechanical Engineering technology area, with 108 pending office actions currently active. These actions are distributed among 96 distinct examiners, suggesting a variety of mechanical and engineering innovations currently under review. The portfolio's reach is further demonstrated by its presence in 43 distinct art units, covering many different specialized technical fields across the USPTO.
KIM, TAE JUN is the busiest examiner for Rolls-Royce, currently handling 3 pending office actions. Despite the total of 108 actions, the workload is dispersed, with the vast majority of examiners handling only a single matter for the company. With 96 distinct examiners and 43 distinct art units, Rolls-Royce must manage a decentralized prosecution process. The role of KIM, TAE JUN as the busiest examiner is minor given the overall scale of the portfolio. This administrative footprint requires a coordinated effort to manage many individual examiner relationships across dozens of different USPTO divisions, ensuring that the company's diverse mechanical innovations are successfully patented.
Based on the USPTO statutory response window for each pending office action. 26 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. 26 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 (1%) |
| §101 + other | 6 (6%) |
| §103 only | 35 (34%) |
| §112 only | 8 (8%) |
| Double-patenting only | 2 (2%) |
| Double-patenting + other | 3 (3%) |
| Multi-statute (no §101) | 48 (47%) |
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 |
|---|---|---|---|
| KIM, TAE JUN | 3 | 63.9% | +25.8% |
| HARRINGTON, ALYSON JOAN | 3 | 74.6% | +61.0% |
| RIBADENEYRA, THEODORE C | 2 | 89.2% | +9.2% |
| WALTHOUR, SCOTT J | 2 | 78.5% | +70.0% |
| SEBASCO CHENG, STEPHANIE | 2 | 58.6% | +71.1% |
| IGUE, ROBERTO TOSHIHARU | 2 | 57.7% | +20.8% |
| BURKE, THOMAS P | 2 | 43.9% | +21.7% |
| KIM, SANG K | 2 | 81.4% | +10.3% |
| DUNN, DARRIN D | 2 | 75.3% | +24.2% |
| GROUX, JENNIFER LILA | 2 | 34.8% | +39.3% |
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 |
|---|---|---|---|
| 17556211 | HYDROGEN STORAGE TANK WITH LEAK MANAGEMENT FUNCTIONALITY | PATEL, SUHANI JITENDRA | 140d overdue |
| 18771137 | METHOD OF MANUFACTURING A COMPONENT OF A GAS TURBINE ENGINE | PENNY, TABATHA L | 128d overdue |
| 18467387 | AEROFOIL FOR A GAS TURBINE ENGINE | PRUITT, JUSTIN A | 46d overdue |
| 18732814 | HEAT EXCHANGER | JONES, GORDON A | 44d overdue |
| 18016777 | REFUELLING AND/OR STORAGE NEUTRON-ABSORBING RODS | DAVIS, SHARON M | 1d overdue |
| 18588431 | PODDED ENGINE ADAPTOR | MICHENER, JOSHUA J | 16d |
| 18736062 | METHOD OF MANUFACTURING A COMPOSITE ARTICLE PRECURSOR | PAGE, HANA C | 22d |
| 18781563 | GEARED GAS TURBINE ENGINE | SEBASCO CHENG, STEPHANIE | 29d |
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 |
|---|---|---|---|
| 19023732 | HEAT EXCHANGER | SEBASCO CHENG, STEPHANIE | 6d |
| 18781563 | GEARED GAS TURBINE ENGINE | SEBASCO CHENG, STEPHANIE | 29d |
| 18340980 | APPARATUS AND METHOD | GROUX, JENNIFER LILA | 34d |
| 18741985 | GAS TURBINE ENGINE FUEL SYSTEM | KIM, TAE JUN | 36d |
| 18224318 | APPARATUS AND METHOD | GROUX, JENNIFER LILA | 40d |
| 19364678 | GAS TURBINE PERFORMANCE | WALTHOUR, SCOTT J | — |
| 19228822 | FUEL SPRAY NOZZLES | KIM, TAE JUN | — |
| 19003432 | HIGH POWER EPICYCLIC GEARBOX AND OPERATION THEREOF | WALTHOUR, SCOTT J | — |
| Art Unit | Apps |
|---|---|
| 3741 | 19 |
| 3745 | 6 |
| 2838 | 5 |
| 3799 | 3 |
| 2852 | 3 |
| 3642 | 3 |
| 1788 | 3 |
| 3675 | 2 |
| 1717 | 2 |
| 3747 | 2 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19387750 | FLUID FLOW MACHINE COMPRISING A SEALING ARRANGEMENT | HAGHIGHIAN, BEHNOUSH | 3745 | §102§103§112 | Non-Final OA | — | Pending | Nov 13, 2025 |
| 19387731 | FLUID FLOW MACHINE COMPRISING A SEALING ARRANGEMENT | RIBADENEYRA, THEODORE C | 3745 | §102§103§112 | Non-Final OA | — | Pending | Nov 13, 2025 |
| 19387739 | FLUID FLOW MACHINE COMPRISING A CASING STRUCTURE | RIBADENEYRA, THEODORE C | 3745 | §102§103 | Non-Final OA | — | Pending | Nov 13, 2025 |
| 19364678 | GAS TURBINE PERFORMANCE | WALTHOUR, SCOTT J | 3741 | §103Other | Final Rejection | — | Pending | Oct 21, 2025 |
| 19349218 | DATA RECORDERS | HOLMAN, JOHN D | 3667 | §102§103Other | Non-Final OA | — | Pending | Oct 03, 2025 |
| 19323341 | GAS TURBINE ENGINE | THOMAS, KYLE ROBERT | 3741 | §103 | Final Rejection | — | Pending | Sep 09, 2025 |
| 19228822 | FUEL SPRAY NOZZLES | KIM, TAE JUN | 3799 | §102§103§112 | Final Rejection | — | Pending | Jun 05, 2025 |
| 19227790 | SEAL STRUCTURE FOR A GAS TURBINE ENGINE | KONERU, LAKSHMI S | 3675 | §103 | Final Rejection | 41d | Pending | Jun 04, 2025 |
| 19200887 | INSPECTION SYSTEM AND METHOD FOR INSPECTING A SURFACE | MAHONEY, CHRISTOPHER E | 2852 | §103 | Non-Final OA | — | Pending | May 07, 2025 |
| 19191503 | COATING SYSTEM REMOVAL METHOD | WALTERS JR, ROBERT S | 1717 | §112 | Final Rejection | — | Pending | Apr 28, 2025 |
| 19180577 | A SEAL, A SEAL ASSEMBLY AND A METHOD | PATEL, VISHAL A | 3675 | §102§103 | Non-Final OA | — | Pending | Apr 16, 2025 |
| 19180117 | GAS TURBINE ENGINE | CHAU, ALAIN | 3741 | §103§112 | Non-Final OA | — | Pending | Apr 15, 2025 |
| 19084508 | ELECTRICAL POWER SYSTEM | THOMAS, LUCY M | 2838 | §102§103 | Non-Final OA | — | Pending | Mar 19, 2025 |
| 19077144 | POWER ELECTRONICS CONVERTER | INGE, JOSEPH N | 2836 | §103 | Non-Final OA | — | Pending | Mar 12, 2025 |
| 19077702 | ELECTRICAL POWER SYSTEM | LAXTON, GARY L | 2838 | §102§103 | Non-Final OA | — | Pending | Mar 12, 2025 |
| 19072091 | FIBRE PLACEMENT HEAD | WOLLSCHLAGER, JEFFREY MICHAEL | 1742 | §103 | Non-Final OA | — | Pending | Mar 06, 2025 |
| 19023732 | HEAT EXCHANGER | SEBASCO CHENG, STEPHANIE | 3741 | §103 | Final Rejection | 6d | Pending | Jan 16, 2025 |
| 19014752 | ELECTRICAL MACHINE MONITORING | LAGUARDA, GONZALO | 3747 | §101DP | Non-Final OA | — | Pending | Jan 09, 2025 |
| 19014705 | MULTIPHASE ELECTRICAL MACHINE CONDITION MONITORING | RIOS RUSSO, RAUL J | 2858 | §101§112 | Non-Final OA | — | Pending | Jan 09, 2025 |
| 19009039 | POWER ELECTRONICS MODULE CONDITION MONITORING | ZAKARIA, AKM | 2858 | §112 | Non-Final OA | — | Pending | Jan 03, 2025 |
| 19003432 | HIGH POWER EPICYCLIC GEARBOX AND OPERATION THEREOF | WALTHOUR, SCOTT J | 3741 | DP | Non-Final OA | — | Pending | Dec 27, 2024 |
| 18967800 | POSITIVE DISPLACEMENT PUMP SYSTEM | DAVIS, MARY ALICE | 3746 | §103 | Non-Final OA | 34d | Pending | Dec 04, 2024 |
| 18967804 | HYBRID TRANSMISSION COMPONENT FOR A GAS TURBINE ENGINE | BINDA, GREGORY JOHN | 3679 | §102§103§112 | Non-Final OA | — | Pending | Dec 04, 2024 |
| 18966953 | INSPECTION SYSTEM | ZHAO, CHRISTINE NMN | 2677 | §101§103 | Non-Final OA | — | Pending | Dec 03, 2024 |
| 18960510 | VARIABLE STIFFNESS TOOL | MELENDEZ, ARMAND | 1759 | §102§103 | Non-Final OA | — | Pending | Nov 26, 2024 |
| 18954875 | IMAGING | WERNER, DAVID N | 2877 | §102§103 | Non-Final OA | — | Pending | Nov 21, 2024 |
| 18952302 | FUEL SPRAY NOZZLE FOR A GAS TURBINE ENGINE | KIM, CRAIG SANG | 3741 | §103 | Non-Final OA | — | Pending | Nov 19, 2024 |
| 18948702 | GAS TURBINE ENGINE COMPONENT PARTICULATE SAMPLING APPARATUS, SYSTEM AND METHOD | ROYSTON, JOHN M | 2855 | §102§103 | Non-Final OA | — | Pending | Nov 15, 2024 |
| 18948019 | METHOD FOR SCANNING A COMPONENT | KAO, CHIH CHENG G | 2884 | §103 | Non-Final OA | — | Pending | Nov 14, 2024 |
| 18944524 | ANALYSING IMAGES OF COMPONENTS | TRAN, PHUOC | 2668 | §101§102 | Non-Final OA | — | Pending | Nov 12, 2024 |
| 18917212 | GAS TURBINE ENGINE HYDROGEN FUEL SYSTEM | NGUYEN, ANDREW H | 3741 | §102§103§112DP | Non-Final OA | — | Pending | Oct 16, 2024 |
| 18916958 | PROPULSION SYSTEM COMPRISING A HYDROGEN-BURNING GAS TURBINE ENGINE | IGUE, ROBERTO TOSHIHARU | 3741 | §103§112 | Non-Final OA | — | Pending | Oct 16, 2024 |
| 18917042 | GAS TURBINE ENGINE | WEINERT, WILLIAM C | 3762 | §102§103 | Non-Final OA | — | Pending | Oct 16, 2024 |
| 18907918 | AN IMPROVED GAS TURBINE ENGINE | BURKE, THOMAS P | 3741 | §103§112 | Non-Final OA | — | Pending | Oct 07, 2024 |
| 18906737 | ELECTRICAL MACHINE CONDITION MONITORING | GONZALEZ QUINONES, JOSE A | 2834 | §102§103 | Non-Final OA | — | Pending | Oct 04, 2024 |
| 18895786 | DC:DC CONVERTER CONTROL | GBLENDE, JEFFREY A | 2838 | §103§112 | Final Rejection | — | Pending | Sep 25, 2024 |
| 18892673 | AIRCRAFT MISSION INDEX WITH SUSTAINABLE AVAITION FUEL VERSUS HYDROCARBRON BASED FUEL | DUGER, JASON H | 3741 | §103 | Non-Final OA | 14d | Pending | Sep 23, 2024 |
| 18825092 | ENGINE CONTROL AND MONITORING SYSTEM | HEIBER, SHANTELL LAKETA | 2645 | §102§103DP | Non-Final OA | — | Pending | Sep 05, 2024 |
| 18825101 | METHOD FOR ENGINE CONTROL AND MONITORING SYSTEM | KIM, JAMES JAY | 3747 | §102§103 | Final Rejection | — | Pending | Sep 05, 2024 |
| 18819288 | RECESSION RESISTANT INTERMEDIATE LAYER FOR CMC VANE | OMORI, MARY I | 1784 | §103 | Non-Final OA | — | Pending | Aug 29, 2024 |
| 18782306 | STAGED COMBUSTOR | HARRINGTON, ALYSON JOAN | 3741 | §103§112 | Final Rejection | — | Pending | Jul 24, 2024 |
| 18781563 | GEARED GAS TURBINE ENGINE | SEBASCO CHENG, STEPHANIE | 3741 | §102§103§112 | Final Rejection | 29d | Pending | Jul 23, 2024 |
| 18729431 | AIRCRAFT WING COMPRISING A STORAGE TANK FOR GASEOUS HYDROGEN | GORDON, ANNA L | 3642 | §112 | Non-Final OA | — | Pending | Jul 16, 2024 |
| 18771137 | METHOD OF MANUFACTURING A COMPONENT OF A GAS TURBINE ENGINE | PENNY, TABATHA L | 1712 | §102§103§112 | Non-Final OA | 128d overdue | Pending | Jul 12, 2024 |
| 18764516 | GAS TURBINE ENGINE STARTING METHOD | KIM, TAE JUN | 3799 | §103 | Non-Final OA | — | Pending | Jul 05, 2024 |
| 18753161 | GAS TURBINE HEAT EXCHANGER | HARRINGTON, ALYSON JOAN | 3741 | §112 | Final Rejection | — | Pending | Jun 25, 2024 |
| 18752042 | INSERTION TOOL | KIM, SANG K | 3654 | §102§103§112 | Non-Final OA | — | Pending | Jun 24, 2024 |
| 18747619 | PROBE AND METHOD FOR NON-DESTRUCTIVE TESTING OF A COMPONENT | BUTLER, KEVIN C | 2852 | §102§103 | Non-Final OA | — | Pending | Jun 19, 2024 |
| 18741985 | GAS TURBINE ENGINE FUEL SYSTEM | KIM, TAE JUN | 3799 | §103§112 | Non-Final OA | 36d | Pending | Jun 13, 2024 |
| 18737303 | MODULAR MECHANICAL TEST APPARATUS FOR CMC COMPONENT | VILLALUNA, ERIKA J | 2852 | §102§103 | Non-Final OA | — | Pending | Jun 07, 2024 |
IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.
Start Free TrialRolls-Royce plc has 103 pending office actions as of October 2026, spread across 55 art units and 91 examiners.
Tae Jun Kim has the most, with 3 of Rolls-Royce plc's pending office actions.
Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.