Technology area: Medical Devices & Mechanical Engineering
93 pending office actions • 32 art units • 73 examiners • 0 of 93 (0%) have an AI response strategy ready • 150 patents granted in the last 365 days
Carrier Corporation has 91 pending office actions in Medical Devices & Mechanical Engineering. The portfolio involves 71 distinct examiners and 32 distinct art units, showing broad examiner dispersion across a substantial set of technical groups. The repeated art-unit activity supports centralized issue tracking, while the examiner spread requires matter-specific preparation.
SHAIKH, MERAJ A is the busiest examiner, with 5 pending actions. That examiner is a clear workstream for focused review, but the larger portfolio remains distributed across many other assignments. Counsel should pair examiner-specific response planning with art-unit-level monitoring for recurring claim and prior-art issues.
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 | 3 (3%) |
| §103 only | 23 (25%) |
| §102 only | 5 (5%) |
| §112 only | 3 (3%) |
| Multi-statute (no §101) | 58 (62%) |
| 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 |
|---|---|---|---|
| SHAIKH, MERAJ A | 5 | 57.3% | +22.3% |
| DELEON, DARIO ANTONIO | 3 | 65.3% | +30.9% |
| DUKE, EMMANUEL E | 3 | 68.9% | +27.4% |
| NORMAN, MARC E | 3 | 84.0% | +10.8% |
| TADESSE, MARTHA | 3 | 67.2% | +14.4% |
| SULLENS, TAVIA L | 2 | 49.8% | +46.9% |
| AZAD, MD ABUL K | 2 | 81.5% | +20.9% |
| DUNN, DARRIN D | 2 | 75.3% | +24.4% |
| ZERPHEY, CHRISTOPHER R | 2 | 48.8% | +19.2% |
| BAUER, CASSEY D | 2 | 74.7% | +15.7% |
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 |
|---|---|---|---|
| 18309137 | HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM CONTROL LEVERAGING FUTURE WEATHER | AZAD, MD ABUL K | 15d |
| 18964759 | SELECTIVE AIR CONDITIONING IN RESPONSE TO ELECTRICITY RATES | AZAD, MD ABUL K | — |
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 |
|---|---|---|---|
| 18350279 | AUDIO-BASED OCCUPANCY DETECTION | ZAAB, SHARAH | 44d overdue |
| 18171917 | ADJUSTABLE PORT FOR RECOVERY VENTILATOR | LAUGHLIN, ELIZABETH ANN | 19d overdue |
| 18540352 | SYSTEM AND METHOD FOR REGULATING A WATER HEATER VIA ATHERMOSTAT | ANDERSON II, STEVEN S | 3d overdue |
| 18758410 | REFRIGERANT CIRCUIT FOR COOLING A VFD UNIT OF AN AIR CONDITIONING SYSTEM | BAUER, CASSEY D | 1d overdue |
| 18515506 | COMPACT BIPOLAR IONIZER | BUI, DUNG H | 5d |
| 18339445 | SHELL AND TUBE ISOLATION IN HEAT EXCHANGER | WEILAND, HANS R. | 27d |
| 18743092 | APPARATUS FOR POWERING A REFRIGERATION UNIT OF A CARGO CONTAINER | MARTIN, ELIZABETH J | 29d |
| 18645507 | HYBRID REFRIGERATION SYSTEM, CONTROL METHOD THEREOF AND TRANSPORTATION REFRIGERATION VEHICLE | MOORE, ADAM DORREL | 30d |
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 |
|---|---|---|---|
| 18758410 | REFRIGERANT CIRCUIT FOR COOLING A VFD UNIT OF AN AIR CONDITIONING SYSTEM | BAUER, CASSEY D | 1d overdue |
| 18309137 | HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM CONTROL LEVERAGING FUTURE WEATHER | AZAD, MD ABUL K | 15d |
| 18341098 | REFRIGERANT COLLECTOR AND AIR SEPARATOR | ZERPHEY, CHRISTOPHER R | 23d |
| 17982006 | PREVENTING ICING IN AN HVAC SYSTEM | SHAIKH, MERAJ A | 33d |
| 18334601 | COMPRESSOR ISOLATION MOLDED INSERT | DELEON, DARIO ANTONIO | 34d |
| 18644575 | TRANSPORT REFRIGERATION UNIT AND REFRIGERATION CIRCUIT WITH REFRIGERANT-BASED DEFROST CONTROL AND A METHOD THEREOF | SHAIKH, MERAJ A | 50d |
| 19213534 | WATER CHILLER THERMAL STORAGE | DELEON, DARIO ANTONIO | — |
| 19205098 | REFRIGERATION APPARATUS | DUKE, EMMANUEL E | — |
| Art Unit | Apps |
|---|---|
| 3763 | 34 |
| 2119 | 6 |
| 3762 | 5 |
| 2117 | 4 |
| 1776 | 4 |
| 3700 | 3 |
| 3745 | 2 |
| 2834 | 2 |
| 2836 | 2 |
| 2115 | 2 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19334190 | CLEARANCE FLOW CONTROL FOR MIXED-FLOW FAN | PRUITT, JUSTIN A | 3745 | §102§103 | Non-Final OA | — | Pending | Sep 19, 2025 |
| 19293330 | SEALING SYSTEM FOR MAGNETIC LEVITATING CENTRIFUGAL COMPRESSOR AND MAGNETIC LEVITATING CENTRIFUGAL COMPRESSOR | LEGENDRE, CHRISTOPHER RYAN | 3711 | §112 | Final Rejection | 28d | Pending | Aug 07, 2025 |
| 19269622 | DIRECT DRIVE REFRIGERANT SCREW COMPRESSOR WITH REFRIGERANT LUBRICATED ROTORS | MIAN, SHAFIQ A | 3746 | §102§103§112 | Non-Final OA | — | Pending | Jul 15, 2025 |
| 19213534 | WATER CHILLER THERMAL STORAGE | DELEON, DARIO ANTONIO | 3763 | §102§103§112 | Non-Final OA | — | Pending | May 20, 2025 |
| 19205098 | REFRIGERATION APPARATUS | DUKE, EMMANUEL E | 3763 | §102§103§112 | Non-Final OA | — | Pending | May 12, 2025 |
| 19178050 | FLUID DISTRIBUTOR FOR A SHELL-AND-TUBE FLOODED EVAPORATOR | DELEON, DARIO ANTONIO | 3763 | §102§103§112 | Non-Final OA | — | Pending | Apr 14, 2025 |
| 19176621 | CONTROL METHOD AND CONTROL DEVICE FOR COMPRESSOR UNIT | LIU, HENRY Y | 3654 | §102Other | Final Rejection | — | Pending | Apr 11, 2025 |
| 19170152 | COOLING SYSTEM FOR A VARIABLE FREQUENCY DRIVE ASSOCIATED WITH A TRANSPORT REFRIGERATION UNIT | DUKE, EMMANUEL E | 3763 | §102§103 | Non-Final OA | — | Pending | Apr 04, 2025 |
| 19089911 | HVAC CASCADE HEAT PUMP | DUKE, EMMANUEL E | 3763 | §102§103§112 | Non-Final OA | — | Pending | Mar 25, 2025 |
| 19086650 | EJECTOR REFRIGERATION SYSTEM | NORMAN, MARC E | 3763 | §102§103§112 | Non-Final OA | — | Pending | Mar 21, 2025 |
| 19076413 | REFRIGERATING SYSTEM, METHOD FOR CONTROLLING REFRIGERATING SYSTEM, AND STORAGE MEDIUM | TADESSE, MARTHA | 3763 | §101§103§112 | Non-Final OA | — | Pending | Mar 11, 2025 |
| 19063487 | COMPRESSOR MOTOR WITH A COOLING SYSTEM | SECK, AHMED F | 2834 | §103 | Non-Final OA | — | Pending | Feb 26, 2025 |
| 19050894 | FLUID DISTRIBUTOR FOR AN INLET HEADER OF A HEAT EXCHANGER | LANE, DEVON | 3763 | §103§112 | Non-Final OA | — | Pending | Feb 11, 2025 |
| 19047949 | WATER SOURCE HEAT PUMP SYSTEM | GAYE, SAMBA NMN | 3763 | §103§112 | Non-Final OA | — | Pending | Feb 07, 2025 |
| 19045254 | SYSTEM AND METHOD FOR LUBRICANT MANAGEMENT IN A HEATING, VENTILATION, AIR CONDITIONING, AND REFRIGERATION (HVACR) SYSTEM | NORMAN, MARC E | 3763 | §102§103§112 | Non-Final OA | — | Pending | Feb 04, 2025 |
| 19041275 | SUPPLEMENTAL ELECTRIC HEATER ASSEMBLY FOR A HEAT PUMP | TADESSE, MARTHA | — | §102§103 | Non-Final OA | — | Pending | Jan 30, 2025 |
| 19032550 | HEAT EXCHANGE SYSTEM AND HEAT EXCHANGE METHOD | MA, KUN KAI | 3763 | §102§103 | Non-Final OA | — | Pending | Jan 21, 2025 |
| 19018632 | REFRIGERATION SYSTEM | SULLENS, TAVIA L | 3763 | §102§103§112 | Non-Final OA | — | Pending | Jan 13, 2025 |
| 19016770 | CHILLER AND AIR CONDITIONING SYSTEM | NORMAN, MARC E | 3763 | §103§112 | Non-Final OA | — | Pending | Jan 10, 2025 |
| 18975815 | MAGNETIC BEARING COMPRESSOR PROTECTION | BABAA, NAEL N | 3763 | Other | Final Rejection | — | Pending | Dec 10, 2024 |
| 18970032 | MANAGEMENT OF SELF-POWERED AIR CONDITIONING SYSTEMS | KOSSEK, MAGDALENA IZABELLA | 2117 | §102§103 | Non-Final OA | — | Pending | Dec 05, 2024 |
| 18964759 | SELECTIVE AIR CONDITIONING IN RESPONSE TO ELECTRICITY RATES | AZAD, MD ABUL K | 2119 | §103 | Non-Final OA | — | Pending | Dec 02, 2024 |
| 18920921 | METHOD FOR CONTROLLING REFRIGERATED TRANSPORTATION SYSTEM, REFRIGERATED TRANSPORTATION SYSTEM, AND STORAGE MEDIUM | SHAIKH, MERAJ A | 3763 | §102§103§112 | Final Rejection | — | Pending | Oct 20, 2024 |
| 18916798 | AIR INTAKE DEVICE FOR THE ENGINE OF A VEHICLE OR TRANSPORTATION EQUIPEMENT | TRIGGS, JAMES J | 3615 | §102§112 | Non-Final OA | — | Pending | Oct 16, 2024 |
| 18916817 | MICROCHANNEL HEAT EXCHANGER | ROJOHN III, CLAIRE E | 3763 | §103§112 | Non-Final OA | — | Pending | Oct 16, 2024 |
| 18912682 | OPTIMIZED SETBACK CONTROL SYSTEM AND A METHOD THEREOF | LINDSAY, BERNARD G | 2119 | §103 | Non-Final OA | — | Pending | Oct 11, 2024 |
| 18910588 | THERMAL OPTIMIZATION FOR DATA CENTERS | DUNN, DARRIN D | 2117 | §101§102§103 | Non-Final OA | — | Pending | Oct 09, 2024 |
| 18899888 | CONDENSER VESSEL, SYSTEM, AND METHOD FOR SEPARATING OIL FROM AN OIL-REFRIGERANT MIXTURE | TADESSE, MARTHA | 3763 | §112 | Non-Final OA | — | Pending | Sep 27, 2024 |
| 18895302 | POWER SYSTEM FOR TRANSPORTATION REFRIGERATION UNIT AND METHOD FOR CONTROLLING POWER THEREOF | EVANS, KARSTON G | 3657 | §103 | Non-Final OA | 11d overdue | Pending | Sep 24, 2024 |
| 18883281 | EXCESS ENERGY MANAGEMENT FOR SELF-POWERED AIR CONDITIONING SYSTEMS | SHIAO, DAVID A | 2836 | §103 | Non-Final OA | 43d overdue | Pending | Sep 12, 2024 |
| 18827697 | THERMOSTAT FOR CONTROLLING OPERATION OF A HEATING,VENTILATION, AND AIR CONDITIONING (HVAC) SYSTEM | JENKINS, TAJAUN DECARLO | 2115 | §103§112 | Non-Final OA | — | Pending | Sep 07, 2024 |
| 18818911 | HEAT PUMP SYSTEM FOR OPTIMIZING OPERATIONAL EFFICIENCYWITHOUT CHARGE IMBALANCE AND A METHOD THEREOF | ZERPHEY, CHRISTOPHER R | 3799 | §102 | Final Rejection | — | Pending | Aug 29, 2024 |
| 18819144 | REFRIGERATED TRANSPORT CONTAINER AND REFRIGERATED TRANSPORT VEHICLE | SEHN, MICHAEL L | 3745 | §102§103§112 | Non-Final OA | — | Pending | Aug 29, 2024 |
| 18817832 | BUILDING CHILLER/HEAT PUMP SYSTEM CARBON EMISSION REDUCTION BY SHIFTING TEMPERATURE SETPOINT | CHUNG, MONG-SHUNE | 2118 | §102Other | Non-Final OA | — | Pending | Aug 28, 2024 |
| 18763561 | GAS-SENSING ELEMENTS AND A METHOD OF MANUFACTURING THEREOF | OLAMIT, JUSTIN N | — | §102§103§112 | Non-Final OA | — | Pending | Jul 03, 2024 |
| 18762830 | SELF-POWERED AIR CONDITIONING SYSTEMS | BRADFORD, JONATHAN | 3763 | §102§103§112 | Non-Final OA | 43d | Pending | Jul 03, 2024 |
| 18761622 | START-UP DEVICE, MOTOR SYSTEM AND METHOD FOR REDUCING DC MOTOR START-UP CURRENT | AGARED, GABRIEL T | 2846 | §102§103 | Final Rejection | — | Pending | Jul 02, 2024 |
| 18761716 | OUTDOOR UNIT FOR REFRIGERATION CABINET AND REFRIGERATION CABINET | HINCAPIE SERNA, GUSTAVO A | 3763 | §102§103 | Non-Final OA | — | Pending | Jul 02, 2024 |
| 18758410 | REFRIGERANT CIRCUIT FOR COOLING A VFD UNIT OF AN AIR CONDITIONING SYSTEM | BAUER, CASSEY D | 3763 | §103§112 | Final Rejection | 1d overdue | Pending | Jun 28, 2024 |
| 18753196 | SHELL-AND-TUBE HEAT EXCHANGER ASSEMBLY AND METHOD FORLIMITING A CORROSION RESPONSE OF TUBES THEREIN | AL SAMIRI, KHALED AHMED ALI | 3763 | §103§112 | Non-Final OA | — | Pending | Jun 25, 2024 |
| 18746118 | ROOFTOP AIR CONDITIONING UNIT | BAUER, CASSEY D | 3763 | §103§112 | Non-Final OA | — | Pending | Jun 18, 2024 |
| 18746124 | ROOFTOP AIR CONDITIONING UNIT | MYERS, KEITH STANLEY | 3763 | §103 | Final Rejection | 17d overdue | Pending | Jun 18, 2024 |
| 18743879 | SERVER COOLING WITH IMMERSED HEAT SINK | FENG, ZHENGFU J | 2835 | §102§103 | Final Rejection | — | Pending | Jun 14, 2024 |
| 18743101 | CONTROLLING THE OPERATION OF GAS FURNACES EQUIPPED WITHSECONDARY ELECTRICAL POWER SOURCE(S) | PEREIRO, JORGE ANDRES | 3762 | §102§103 | Non-Final OA | — | Pending | Jun 14, 2024 |
| 18743092 | APPARATUS FOR POWERING A REFRIGERATION UNIT OF A CARGO CONTAINER | MARTIN, ELIZABETH J | 3763 | §102§103§112 | Final Rejection | 29d | Pending | Jun 13, 2024 |
| 18739504 | METHOD FOR PROTECTING TUBES OF A HEAT EXCHANGER | HOTCHKISS, MICHAEL WAYNE | 3722 | §102§103 | Non-Final OA | — | Pending | Jun 11, 2024 |
| 18739645 | PROTECTIVE SHIELD FOR A SENSOR SUBASSEMBLY | NATH, SUMAN KUMAR | 2855 | §102§103 | Non-Final OA | — | Pending | Jun 11, 2024 |
| 18738020 | SYSTEM AND METHOD FOR CALIBRATING INDOOR AIR QUALITY SENSORSOF A MULTI-ZONE ENVIRONMENT | YANCHUS III, PAUL B | 2115 | §102§103 | Non-Final OA | — | Pending | Jun 09, 2024 |
| 18735501 | SERVER WITH HYBRID THERMAL MANAGEMENT SYSTEM | BUTTAR, MANDEEP S | 2841 | §102 | Non-Final OA | — | Pending | Jun 06, 2024 |
| 18732827 | HEATING VENTILATION AND AIR CONDITIONING SYSTEM FOR GENERATING FIRE ALERTS AND METHOD THEREOF | SURYAWANSHI, SURESH | — | §102 | Non-Final OA | — | Pending | Jun 04, 2024 |
IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.
Start Free TrialCarrier Corporation has 93 pending office actions as of October 2026, spread across 32 art units and 73 examiners.
Meraj A Shaikh has the most, with 5 of Carrier Corporation's pending office actions.
Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.
