USPTO Art Unit 3618 Prosecution Statistics

Art Unit Information

Art Unit: 3618
Group: 3610
Tech Center: 3600
Total Cases: 18,117
Last Active: July 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19147701ORIENTATION STABILIZING DEVICEJuly 2025March 2026Allow800NoNo
19259562GEARBOXJuly 2025October 2025Allow310NoNo
19216915THIN MOTOR JOINT MODULEMay 2025October 2025Allow510NoNo
19209914BENDING MESHING TYPE GEAR DEVICEMay 2025February 2026Allow900NoNo
19199359GEARED TORQUE TRANSMISSION SYSTEMMay 2025July 2025Allow200NoNo
19199354DUAL SPLINE GEAR ASSEMBLYMay 2025July 2025Allow200YesNo
19190192POWER TRANSMISSION SYSTEMApril 2025August 2025Allow411NoNo
19190427PINNED GEAR ASSEMBLYApril 2025August 2025Allow411NoNo
19189979ELASTOMERICALLY DAMPED GEAR WITH COAXIAL SELF ALIGNMENTApril 2025August 2025Allow411NoNo
19186608SERVO REDUCERApril 2025February 2026Allow1000NoNo
19176481TORQUE FREE ARTICULATED TENSION TRANSMISSIONApril 2025May 2025Allow100NoNo
19173821THREE-DEGREE-OF-FREEDOM PARALLEL ELECTROMAGNETIC VARIABLE STIFFNESS ACTUATOR AS AN END EFFECTOR FOR ROBOTIC GRINDING AND POLISHINGApril 2025November 2025Allow710NoNo
19098676SELF ALIGNING GEARApril 2025August 2025Allow411NoNo
19096280COMBINED MATERIAL GEARMarch 2025May 2025Allow200NoNo
19093020ROBOT AND ROBOT SYSTEMMarch 2025January 2026Allow1000NoNo
19079509HYBRID DRIVE OMNI-DIRECTIONAL MOTION ACTUATOR BASED ON ORIGAMI STRUCTUREMarch 2025October 2025Allow710NoNo
19106813Five-Bar Folding Mechanism and Method with Quick Release FunctionalityFebruary 2025August 2025Allow610YesNo
19105450CAM AND HARMONIC REDUCERFebruary 2025January 2026Allow1100NoNo
19050354BALL SCREW MECHANISM WITH ASYMMETRICAL ANGULAR THREADSFebruary 2025November 2025Allow900NoNo
19050974ADAPTER AND SURGICAL AUXILIARY SYSTEMFebruary 2025July 2025Allow500NoNo
19046873Deceleration of Gyroscopic Boat Roll StabilizerFebruary 2025March 2026Allow1310NoNo
19041907REVERSE DRIVE SYSTEM FOR A MOTORIZED VEHICLEJanuary 2025February 2026Allow1210NoNo
19041558DAMPER SYSTEM FOR CONTROLLED ENGAGEMENT OF A TORQUE TRANSFER MECHANISMJanuary 2025January 2026Allow1100NoNo
19029214MONOLITHIC SINGLE-PIECE SHAFT-AND-PINION HOUSING FOR A SLIDING SUPPORT MECHANISMJanuary 2025January 2026Allow1221YesNo
19025052SELF-LOCKING DRIVE AND LINEAR ACTUATORJanuary 2025February 2026Allow1310NoNo
18833017BALL SCREW DEVICEJanuary 2025March 2026Allow2010YesNo
18994278FLEXIBLE MECHANICAL ARM AND ROBOTJanuary 2025March 2026Allow1400NoNo
19014196ADJUSTMENT MECHANISM, ARMREST, AND SEATJanuary 2025March 2025Allow200NoNo
19010254REDUCTION GEARBOX FOR SOLAR PHOTOVOLTAIC TRACKINGJanuary 2025February 2026Allow1310NoNo
18999201ANNULAR PULLEY SYSTEMDecember 2024January 2026Allow1301NoNo
18999212MULTIPLE-GEAR-RATIO PORTAL GEAR BOXDecember 2024September 2025Allow900NoNo
18991266STIFFNESS-VARIABLE JOINT ACTUATOR WITH MOTOR-REDUCER INTEGRATIONDecember 2024April 2025Allow400YesNo
18986652ADJUSTABLE MACHINE HANDLE ASSEMBLY AND MOWERDecember 2024November 2025Allow1100NoNo
18984298LOCK ASSEMBLY FOR LINEAR ACTUATORSDecember 2024October 2025Allow1000YesNo
18981879WORKING VEHICLEDecember 2024March 2026Allow1510NoNo
18979719Work VehicleDecember 2024November 2025Allow1100NoNo
18873377CABLE ACTUATOR WITH IMPROVED COMPACTNESSDecember 2024December 2025Allow1310NoNo
18974340BELT TRANSMISSION MECHANISM AND TRANSFER ROBOT INCLUDING THE SAMEDecember 2024December 2025Allow1210NoNo
18872740RACK GUIDEDecember 2024October 2025Allow1000NoNo
18872749RACK GUIDEDecember 2024January 2026Allow1310NoNo
18971598MANIPULATOR ARMDecember 2024September 2025Allow900NoNo
18970085ASSEMBLY FOR LUBRICATING A GEARWHEEL OF A TRANSMISSION, A TRANSMISSION AND A VEHICLEDecember 2024August 2025Allow800NoNo
18964061CONTROL DEVICE FOR VEHICLENovember 2024October 2025Allow1000NoNo
18958584DRIVING APPARATUS AND INSPECTION SYSTEMNovember 2024November 2025Allow1200NoNo
18954954INTELLIGENT FLEXIBLE BIOMIMETIC FACIAL-EXPRESSION ROBOTNovember 2024January 2025Allow200NoNo
18841866PARALLEL LINK MECHANISMNovember 2024February 2026Abandon1810NoNo
18954863HYBRID ELECTRIC TRANSMISSION FOR INERTIAL AND NON-INERTIAL LOADSNovember 2024October 2025Allow1121YesNo
18954891ARM STRUCTURENovember 2024October 2025Allow1101NoNo
18954837HYBRID ELECTRIC TRANSMISSION FOR HYDRAULIC FRACTURINGNovember 2024January 2026Allow1421NoNo
18954942Electromechanical Actuator having Design Elements for Improved Oil GuidanceNovember 2024February 2026Allow1510NoNo
18954455CRANE MOTOR TRANSMISSION STRUCTURENovember 2024August 2025Allow900NoNo
18865539SHIFT DEVICENovember 2024December 2025Allow1310NoNo
18864082BALL SCREW DEVICENovember 2024March 2026Allow1610NoNo
18940929ONE-PIECE RECIRCULATION PART, RECIRCULATION THREADED MEMBER AND BALLSCREW MECHANISMNovember 2024October 2025Allow1200NoNo
18940194JOINT MECHANISMNovember 2024November 2025Allow1210YesNo
18704927HELICAL GEAR AND REDUCERNovember 2024February 2026Allow2110NoNo
18863533MACHINE TOOL AND METHOD OF OPERATING THE MACHINE TOOLNovember 2024February 2026Allow1510NoNo
18938686GEAR STRUCTURENovember 2024December 2025Allow1411NoNo
18862229METHOD OF EXCHANGING A RACK OF A RACK AND PINION DRIVE ARRANGEMENT AND JIG ASSEMBLYNovember 2024July 2025Allow800NoNo
18935096JOINT APPARATUSES FOR ROBOTNovember 2024June 2025Allow700NoNo
18861775TRANSMISSION DEVICE FOR UNMANNED AERIAL VEHICLEOctober 2024August 2025Allow900NoNo
18931710DRIVE MECHANISM IN PARTICULAR FOR MAYTAGGING OPERATIONOctober 2024August 2025Allow900NoNo
18861457STEERING WHEEL ASSEMBLYOctober 2024July 2025Allow800NoNo
18861535DOOR DRIVE DEVICE FOR ELECTROMOTIVELY ADJUSTING A VEHICLE DOOROctober 2024November 2025Allow1200NoNo
18860070ROBOT HAVING ARTICULATED ARMOctober 2024February 2026Allow1610NoNo
18860606ORTHOGONAL-AXIS POWER TRANSMISSION DEVICEOctober 2024March 2026Abandon1610NoNo
18925479FLEXIBLE APPARATUSOctober 2024August 2025Allow1010NoNo
18922730Gear Reducer With Balanced Output Of Very Large Torque From Plurality Of MotorsOctober 2024January 2026Allow1510NoNo
18919731Rotary Inertia DriveOctober 2024March 2026Abandon1710NoNo
18920624DRIVING MECHANISM FOR ROTATING PHOTO BOOTHOctober 2024January 2026Allow1520NoNo
18919675ROLLED THREAD SCREW AND ROLLED THREAD SCREW MANUFACTURING METHODOctober 2024September 2025Allow1110NoNo
18857570MULTI-MATERIAL, FLEXIBLE ROBOTIC ASSEMBLY WITH INTERLOCKING AND ELASTIC CABLES, EMBEDDED SENSORS, AND ACTUATORSOctober 2024December 2025Allow1410NoNo
18857637CONNECTION STRUCTURE AND PARALLEL LINK ROBOTOctober 2024June 2025Allow800NoNo
18917379Electric ActuatorOctober 2024September 2025Allow1110NoNo
18917377ACTUATOR, AND ROBOT, BRACE, AND HAPTIC DEVICE INCLUDING THE SAMEOctober 2024January 2026Allow1510YesNo
18855657A GEARBOX FOR A WIND TURBINEOctober 2024November 2025Allow1310NoNo
18911599GEARBOX ASSEMBLY WITH AXIALLY ADJUSTABLE BEVEL GEAROctober 2024October 2025Allow1210NoNo
18855397ASYMMETRIC-LOOP CABLE CYLINDEROctober 2024February 2025Allow400NoNo
18910062Control Device Configured to be Tilted about Each of First and Second Turn AxesOctober 2024October 2025Allow1210NoNo
18907750EXPANDING FORCE ELECTRIC LINEAR ACTUATOROctober 2024January 2026Allow1500NoNo
18903235FLEXIBLE SPLINE AND WAVE GENERATOR FOR STRAIN WAVE GEARINGOctober 2024September 2025Allow1110NoNo
18853186COUPLING STRUCTURE AND PARALLEL LINK ROBOTOctober 2024December 2025Allow1510YesNo
18899084RIGID-FLEXIBLE COUPLED CONTINUUM ROBOT UNIT AND CONTINUUM ROBOTSeptember 2024September 2025Allow1210NoNo
18899000BIRFIELD FLEXIBLE VARIABLE-STIFFNESS CONTINUUM ROBOT UNIT AND CONTINUUM ROBOTSeptember 2024May 2025Allow800NoNo
18900220BELT TERMINATION AND TENSIONING IN A PULLEY ARRANGEMENT FOR A ROBOTIC ARMSeptember 2024February 2026Allow1711YesNo
18851240WIND TURBINE POWER TRANSMISSION SYSTEMSeptember 2024January 2026Abandon1610NoNo
1889743218-AXIS ORIENTATION MECHANISMSeptember 2024February 2026Allow1610YesNo
1889742224-AXIS ORIENTATION MECHANISMSeptember 2024February 2026Allow1610NoNo
18850068GEARWHEEL TRANSMISSION COMPRISING WOBBLE MEMBERSeptember 2024January 2025Allow400NoNo
18699676GEAR PAIRSeptember 2024March 2026Abandon2310NoNo
18895283HIGH STIFFNESS BAR WITH INTERNAL ACTUATORS AND INTERNAL CABLINGSeptember 2024July 2025Allow900NoNo
18892862INFINITE-ROTATION INFINITE-STIFFNESS VARIABLE STIFFNESS ACTUATOR (IRISVSA) WITH APPLICATION FOR COMPLIANT SUPERNUMERARY ROBOTIC LIMBSeptember 2024February 2026Allow1710NoNo
18893106Compact Traversing RobotSeptember 2024January 2026Allow1600NoNo
18888286Robot, Ceiling Mounted Type Robot And Robot SystemSeptember 2024February 2026Allow1720YesNo
18847044LINEAR DRIVESeptember 2024June 2025Allow900NoNo
18845473ELLIPTICAL DRIVESeptember 2024November 2025Allow1400NoNo
18685812RACK SHAFT, METHOD FOR MANUFACTURING SAME, AND RACK-AND-PINION STEERING GEAR UNITSeptember 2024December 2025Abandon2201NoNo
18826368PARALLEL LINK MECHANISM, ROBOT MECHANISM, AND BRAKING METHODSeptember 2024December 2025Allow1611NoNo
18826413INPUT DEVICE HAVING MAGNETIC SENSORSeptember 2024March 2026Allow1811NoNo
18826395Multi-Directional Input Device Having a Permanent MagnetSeptember 2024February 2026Allow1711NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 3618.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
155
Examiner Affirmed
88
(56.8%)
Examiner Reversed
67
(43.2%)
Reversal Percentile
87.3%
Higher than average

What This Means

With a 43.2% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
493
Allowed After Appeal Filing
176
(35.7%)
Not Allowed After Appeal Filing
317
(64.3%)
Filing Benefit Percentile
68.6%
Higher than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 35.7% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting reconsideration.

Strategic Recommendations

✓ Appeals to PTAB show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

✓ Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 3618 - Prosecution Statistics Summary

Executive Summary

Art Unit 3618 is part of Group 3610 in Technology Center 3600. This art unit has examined 18,117 patent applications in our dataset, with an overall allowance rate of 71.8%. Applications typically reach final disposition in approximately 24 months.

Comparative Analysis

Art Unit 3618's allowance rate of 71.8% places it in the 36% percentile among all USPTO art units. This art unit has a below-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 3618 receive an average of 1.37 office actions before reaching final disposition (in the 14% percentile). The median prosecution time is 24 months (in the 85% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more challenging examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

Important Disclaimer

Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.