Prosecution Insights
Last updated: October 10, 2026

Caterpillar Inc.

Technology area: Transportation, E-Commerce & Mechanical Systems

142 pending office actions • 59 art units • 127 examiners • 0 of 142 (0%) have an AI response strategy ready • 443 patents granted in the last 365 days

Analysis

Caterpillar Inc. maintains a large portfolio with 143 pending office actions in the Transportation, E-Commerce & Mechanical Systems technology area. These actions are spread across 127 distinct examiners, indicating a broad distribution of the workload. The prosecution involves 60 distinct art units, which reflects the variety of technical classifications within the company's mechanical and transportation innovations. PEZZUTO, ROBERT ERIC is the busiest examiner for this portfolio, currently managing 3 pending office actions. This number for the busiest examiner, compared to the total of 143 pending office actions, highlights the decentralized nature of the company's patent filings.

With 127 distinct examiners involved, the company must navigate a high volume of individual examiner preferences and styles. The 60 distinct art units suggest that the company's intellectual property strategy covers many different functional areas. Managing 143 pending office actions requires significant coordination across these various USPTO divisions. Practitioners should note that the 127 distinct examiners provide a diverse range of perspectives on the company's technology. The concentration of 3 pending office actions with PEZZUTO, ROBERT ERIC is the only minor point of examiner overlap. This broad distribution across the 60 distinct art units indicates a complex and multifaceted prosecution landscape.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

142
Total Pending OAs
91
Non-Final OAs
38
Final Rejections
13
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 38 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

15
Overdue
3
Due this week
9
Due this month
6
Due in next 60 days
5
Due later

Deadline Fire Line

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. 38 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (15)Due ≤ 7 days (3)Due ≤ 30 days (9)Due ≤ 60 days (6)Due later (5)

Case Difficulty Mix

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.

76
Hard (54%)
64
Medium (45%)
2
Easy (1%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only7 (5%)
§101 + other11 (8%)
§103 only52 (37%)
§102 only9 (6%)
§112 only1 (1%)
Double-patenting only1 (1%)
Double-patenting + other3 (2%)
Multi-statute (no §101)58 (41%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

9
Life Sciences
6% of docket
3
Information Tech
2% of docket
2
Communications
1% of docket
18
Semiconductors
13% of docket
73
Mechanical / Eng
51% of docket
37
Business / Other
26% of docket

Time-on-OA Estimate

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.

1,420 h
Manual time on pending OAs
284 h
Time saved (low, 20%)
497 h
Time saved (mid, 35%)
12.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
PEZZUTO, ROBERT ERIC 3 85.2% +10.1%
TSUI, ALFRED H 3 32.7% +32.8%
BELLINGER, JASON R 3 69.9% +18.8%
KNUTSON, JACOB D 2 79.6% +20.6%
BEHRENS, ADAM J 2 77.3% +12.1%
ANWARI, MACEEH 2 81.2% +5.8%
SULTANA, DILARA 2 81.0% +15.8%
KHALED, ABDALLA A 2 73.0% +20.9%
PELTON, NATHANIEL R 2 74.5% +19.0%
KURTZ, BENJAMIN M 2 56.8% +17.6%

Quick Wins (3)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18178100 SYSTEMS AND METHODS FOR DETERMINING A COMBINATION OF SENSOR MODALITIES BASED ON ENVIRONMENTAL CONDITIONS SULTANA, DILARA 69d
18769486 SYSTEM AND METHOD OF OPERATING PERCEPTION DEVICES IN MOBILE MACHINES ANWARI, MACEEH —
18588556 Electrical Power System for Earthmoving Machine ANWARI, MACEEH —

Hard Cases (76)

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 #TitleExaminerDue in
17153648 Cryogenic Containment System PETTITT, JOHN F 323d overdue
17117153 HYBRID ENSEMBLE APPROACH FOR IOT PREDICTIVE MODELLING ALGHAZZY, SHAMCY 107d overdue
17519477 SYSTEMS AND METHODS FOR UNDERCARRIAGE WEAR PREDICTION CHAVEZ, ANTHONY RAY 46d overdue
18480861 METHOD FOR DETERMINING OPTIMAL MACHINE PERFORMANCE DURING AUTONOMOUS OPERATION KHALED, ABDALLA A 36d overdue
18499921 WEAR INFORMING SYSTEM AND RELATED METHODS OF USE TURNER, SHELBY AUBURN 16d overdue
18540559 SNOW WING LINKAGE TSUI, ALFRED H 8d overdue
18736161 DOOR CLOSING SYSTEM OF AN ENERGY TRANSFER SYSTEM MORFORD, ALEXANDRA ROBYN 4d overdue
18156097 SERVICE COVER FOR INSTALLING AND REMOVING FILTER ELEMENTS OF A FILTER ASSEMBLY HE, QIANPING 4d overdue

Interview Candidates (21)

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 #TitleExaminerDue in
18480861 METHOD FOR DETERMINING OPTIMAL MACHINE PERFORMANCE DURING AUTONOMOUS OPERATION KHALED, ABDALLA A 36d overdue
18540559 SNOW WING LINKAGE TSUI, ALFRED H 8d overdue
18119885 ULTRA-DEEP INDUCTION HARDENING FOR TRACK PADS BELLINGER, JASON R 6d
18178100 SYSTEMS AND METHODS FOR DETERMINING A COMBINATION OF SENSOR MODALITIES BASED ON ENVIRONMENTAL CONDITIONS SULTANA, DILARA 69d
18470692 CORNER SEGMENT TSUI, ALFRED H 75d
19070675 SCALLOP-RESISTANT TRACK LINK AND METHOD OF MAKING SAME KNUTSON, JACOB D —
19070662 SCALLOP-RESISTANT TRACK LINK AND METHOD OF MAKING SAME KNUTSON, JACOB D —
18891080 BUCKET LIP HAVING WEAR CAP RETENTION FEATURE BEHRENS, ADAM J —

Top Art Units

Art UnitApps
3671 12
3663 7
3763 5
2858 5
3675 4
3615 4
2857 4
3669 3
3662 2
3752 2

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19469817 Recovery Of Electric Work Vehicles ELARABI, TAREK A 3661 §102§103 Non-Final OA — Pending Sep 26, 2025
19296668 SYSTEM AND METHOD FOR GENERATING WORK PLAN FOR AUTONOMOUS OPERATION OF COMPACTOR ALQADERI, NADA MAHYOOB — DP Non-Final OA — Pending Aug 11, 2025
19083480 SEAL MEMBER FOR JOINT ASSEMBLY OF A MACHINE AND SYSTEMS, METHODS, AND ASSEMBLIES THEREOF KONERU, LAKSHMI S 3675 §103 Non-Final OA — Pending Mar 19, 2025
19070675 SCALLOP-RESISTANT TRACK LINK AND METHOD OF MAKING SAME KNUTSON, JACOB D — §103§112 Non-Final OA — Pending Mar 05, 2025
19070662 SCALLOP-RESISTANT TRACK LINK AND METHOD OF MAKING SAME KNUTSON, JACOB D — §103 Non-Final OA — Pending Mar 05, 2025
19053358 METHODS AND SYSTEMS FOR DETERMINING MACHINE STATE KINGSLAND, KYLE J 3663 §102§103§112 Non-Final OA — Pending Feb 13, 2025
19051814 SYSTEMS AND METHODS FOR DRILLING MACHINES WALLACE, KIPP CHARLES 3674 §103 Non-Final OA — Pending Feb 12, 2025
19099873 Hydraulic Actuator for Work Machine NGUYEN, DUSTIN T — §102§103 Non-Final OA — Pending Jan 30, 2025
18992110 Wear Pad Assembly TRAN, DIEM M 3654 §102§103 Non-Final OA — Pending Jan 07, 2025
18980169 CAUSING A BATTERY OF A MACHINE TO ENTER INTO A CHARGING STATE SEOL, DAVIN 3662 §103 Final Rejection 86d Pending Dec 13, 2024
18965196 SYSTEMS AND METHODS FOR MODIFYING A NON-ELECTRIC MACHINE TO BE AN ELECTRIC OR HYBRID ELECTRIC MACHINE ALAM, NAEEM TASLIM 3668 §103 Non-Final OA — Pending Dec 02, 2024
18945682 RETENTION COMPONENT ASSEMBLY FOR WORK TOOL BREGEL, EVAN ANTHONY 3671 §102§103 Non-Final OA — Pending Nov 13, 2024
18933251 WING SHROUD FOR BUCKET LIP AND BUCKET LIP ASSEMBLY USING SAME MITCHELL, JOEL F 3671 §103§112 Non-Final OA — Pending Oct 31, 2024
18927250 System and Method for Maintaining Working Temperature of Circuit Breakers AL-TAWEEL, MUAAMAR QAHTAN — §103 Final Rejection — Pending Oct 25, 2024
18924517 MASTER LINK END FOR MASTER LINK ASSEMBLY AND RELATED METHODS PALMER, ALEX ROBERT 3615 §102§103 Non-Final OA — Pending Oct 23, 2024
18920504 Systems and Methods for Cooling a Secondary Battery Used for Underground Mining Machines FURDGE, LARRY L 3763 §103§112Other Non-Final OA — Pending Oct 18, 2024
18907093 MANAGEMENT OF MACHINE OPERATION SAFETY ZONES CHOI, ALICIA M 2117 §101 Non-Final OA — Pending Oct 04, 2024
18897984 DUAL FUEL INJECTOR AND METHOD SUTHERLAND, STEVEN M 3752 §102§103§112 Non-Final OA — Pending Sep 26, 2024
18891462 DYNAMIC CONTROL STRATEGY FOR TWO-LEVEL DC-DC CONVERTERS GBLENDE, JEFFREY A 2838 §102§103§112 Non-Final OA — Pending Sep 20, 2024
18891080 BUCKET LIP HAVING WEAR CAP RETENTION FEATURE BEHRENS, ADAM J 3671 §103 Non-Final OA — Pending Sep 20, 2024
18891067 BUCKET LIP HAVING SHROUD STATIONS FOR MULTI-DIRECTIONAL LOAD SUPPORT BEHRENS, ADAM J 3671 §102 Non-Final OA — Pending Sep 20, 2024
18891065 BUCKET LIP AND BUCKET LIP ASSEMBLY FOR MACHINE HAVING LIP WINGS PEZZUTO, ROBERT ERIC 3671 §102§103 Non-Final OA — Pending Sep 20, 2024
18891054 BUCKET LIP AND BUCKET FOR MACHINE HAVING SEGMENTED INTEGRAL BEAM PEZZUTO, ROBERT ERIC 3671 §102§103§112 Non-Final OA — Pending Sep 20, 2024
18888623 Quick Tool Coupler System TIGHE, BRENDAN P 3652 §101 Non-Final OA — Pending Sep 18, 2024
18821323 Cooling Arrangement for Conditioning Cabins of Work Machines BRADFORD, JONATHAN 3763 §102§103 Final Rejection — Pending Aug 30, 2024
18814739 METHOD AND SYSTEM FOR HEATING CABINS OF WORK MACHINES NOUKETCHA, LIONEL W — §102 Non-Final OA — Pending Aug 26, 2024
18792989 MODULAR AIR FILTER ASSEMBLY LAWRENCE JR, FRANK M 1776 §102Other Non-Final OA — Pending Aug 02, 2024
18792974 MODULAR AIR FILTER ASSEMBLY BUI, DUNG H 1773 §103Other Non-Final OA — Pending Aug 02, 2024
18787482 Cooling Arrangement for an Electric Charger System DELEON, DARIO ANTONIO 3763 §103§112 Non-Final OA — Pending Jul 29, 2024
18833311 Roof Support Unit for a Mining Machine TOLEDO-DURAN, EDWIN J 3678 §102§103§112 Non-Final OA — Pending Jul 25, 2024
18777714 WEAR SLEEVE AND LIP SEAL POSITIONABLE UPON A MACHINE COMPONENT BYRD, EUGENE G 3675 §103 Final Rejection — Pending Jul 19, 2024
18771808 SYNTHETIC AUDIO FEEDBACK FOR MACHINE IMPLEMENT CONTROL BREWER, JACK ROBERT 3663 §103§112 Final Rejection 63d Pending Jul 12, 2024
18771488 CONDUITS FOR FEEDING AIR TO SMALL BEARINGS OF JOURNAL AREA OF ROTARY DRILL BIT QUAIM, LAMIA 3676 §103 Non-Final OA 28d overdue Pending Jul 12, 2024
18769486 SYSTEM AND METHOD OF OPERATING PERCEPTION DEVICES IN MOBILE MACHINES ANWARI, MACEEH 3663 §103 Non-Final OA — Pending Jul 11, 2024
18763352 Electrical Powertrain System for Mobile Crushers WIBLIN, MATTHEW 3745 §102§112 Non-Final OA — Pending Jul 03, 2024
18724735 Longwall Shearer Positioning Method, Pan for Panline, Longwall Shearer System COY, NICOLE A 3672 §101§112Other Non-Final OA — Pending Jun 27, 2024
18751648 BATTERY PACK CONTACT BREAK DETECTION MONSUR, NASIMA 2858 §101§102§103§112 Non-Final OA 7d Pending Jun 24, 2024
18738983 REDUCED POWERTRAIN LOAD ON BATTERY CONTACTOR BARNETT, JOEL 2849 §103 Non-Final OA — Pending Jun 10, 2024
18736832 ELECTRICAL INTERFACE SYSTEM LIN, CHENG XI — §103 Non-Final OA — Pending Jun 07, 2024
18736161 DOOR CLOSING SYSTEM OF AN ENERGY TRANSFER SYSTEM MORFORD, ALEXANDRA ROBYN 3658 §103§112 Non-Final OA 4d overdue Pending Jun 06, 2024
18680695 GROUND FAULT DETECTION TECHNIQUES IN MOBILE MACHINES BARRON, JEREMIAH JOHN 2858 §103§112 Non-Final OA 28d Pending May 31, 2024
18678421 Perception-Based Worksite Control System TAN, OLIVER E 3669 §103 Non-Final OA — Pending May 30, 2024
18671029 OPTIMIZATION OF PARALLEL DC-DC EFFICIENCY ON A BATTERY ELECTRIC MACHINE PATEL, JIGNESHKUMAR C — §102 Final Rejection — Pending May 22, 2024
18670462 Spatial Localization Imaging System DOROS, KAYLA RENEE 3657 §103 Non-Final OA — Pending May 21, 2024
18664249 FUEL CELL LOAD SPLIT MANAGEMENT AMRANY, ADI — §101§102§103§112 Non-Final OA — Pending May 14, 2024
18663143 SYSTEM AND MOUNTING ARRANGEMENTS FOR ACCESSING MACHINE SEAT CONTROLS SAEED, AHMED M 2831 §102§103 Non-Final OA — Pending May 14, 2024
18658773 Machine Sensor Configuration System SULTANA, DILARA — §102§103§112 Non-Final OA — Pending May 08, 2024
18656464 BATTERY PACK PRE-CHARGING DHAKAL, BICKEY 2896 §101§102 Non-Final OA — Pending May 06, 2024
18652510 Apparatus for Locating Hardware COURSON, TANIA C — §103§112 Non-Final OA — Pending May 01, 2024
18650561 FUEL INJECTOR HAVING NOZZLE CHECK WITH TRANSFER HOLES ORIENTED FOR REDUCED MIXING OF TWO FUELS REINBOLD, SCOTT A 3747 §102§103 Final Rejection 22d Pending Apr 30, 2024

View all 142 →

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Frequently Asked Questions

How many pending USPTO office actions does Caterpillar Inc. have?

Caterpillar Inc. has 142 pending office actions as of October 2026, spread across 59 art units and 127 examiners.

Which USPTO examiner handles the most Caterpillar Inc. applications?

Robert Eric Pezzuto has the most, with 3 of Caterpillar Inc.'s pending office actions.

What technology area are Caterpillar Inc.'s patent applications in?

Mostly Transportation, E-Commerce & Mechanical Systems (USPTO Tech Center 3600), based on where its pending office actions are examined.

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