USPTO Art Unit 3644 Prosecution Statistics

Art Unit Information

Art Unit: 3644
Group: 3640
Tech Center: 3600
Total Cases: 19,496
Last Active: October 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19360663Composable Inserts for DIY TrapsOctober 2025December 2025Allow200NoNo
19360681Pet feeding dishOctober 2025January 2026Allow300NoNo
19332164PET PROTECTION COLLARSeptember 2025November 2025Allow200NoNo
19164179BUOYANCY SYSTEM FOR AN AIRCRAFT COMPRISING ROLL STABILIZATION MEANSSeptember 2025March 2026Allow600YesNo
19317745APPARATUS AND METHOD OF EXTRACTING WATER-SOLUBLE MINERALS FROM AN ARID ENVIRONMENTSeptember 2025December 2025Allow300NoNo
19308770PULSED AEROPONIC AGRICULTURAL GROWTH SYSTEMS AND METHODSAugust 2025December 2025Allow400NoNo
19306274WIND TUNNEL FOR ASSESSMENT OF INSECTICIDESAugust 2025December 2025Allow400NoNo
19291190FISHING RIGAugust 2025October 2025Allow200YesNo
19272515CABLE HARNESS SLEEVESJuly 2025March 2026Allow800YesNo
19262119NOISE-REDUCING PET CALMING VESTJuly 2025January 2026Allow610YesNo
19246739UNMANNED FLYING CRAFTJune 2025February 2026Allow800YesNo
19247093WINGTIP SHIELDJune 2025August 2025Allow100YesNo
19242550EMERGENCY LANDING SYSTEM FOR AIRCRAFTSJune 2025August 2025Allow210NoNo
19239404LANDING SYSTEM FOR A FIXED-WING UNMANNED AERIAL VEHICLE (UAV)June 2025November 2025Allow500NoNo
19229385APPARATUS AND METHOD OF CREATING WETLANDS IN REMOTE ARID ENVIRONMENTSJune 2025July 2025Allow100NoNo
19228163ANIMAL TRANSPORT SYSTEMJune 2025March 2026Allow900NoNo
19220642System of Extendible Adhesive-Based Insect and Pest Entrapment ApparatiMay 2025September 2025Allow400NoNo
19218411Bird FeederMay 2025December 2025Allow710NoNo
19212816PET GARMENTMay 2025December 2025Allow710NoNo
19207980ANIMAL DRINKING VALVEMay 2025February 2026Allow900YesNo
19206275SYSTEM AND METHOD FOR ICE FISHINGMay 2025October 2025Allow521YesNo
19200633ANIMAL MANAGEMENT SYSTEMMay 2025November 2025Allow610NoNo
19197381LIFT FOR AN AIRPLANEMay 2025March 2026Abandon1110NoNo
19190521HIGH-EFFICIENCY ELECTRIC TORQUE ARM DRIVE FOR UNMANNED HELICOPTERSApril 2025September 2025Allow510NoNo
19185659METHOD AND APPARATUS FOR HIGH-DENSITY INDOOR FARMINGApril 2025January 2026Allow900NoNo
19185094DRONE POD FOR RECEIVING, STORING, AND PRESENTING A DRONEApril 2025March 2026Allow1000NoNo
19182159REAL-TIME CONTROL FOR PASSENGER COMFORT AND SLEEP QUALITY FOR AIRCRAFT SEATINGApril 2025September 2025Allow500NoNo
19180776AUTOMATIC DETECTION DEVICE FOR SEED VIGORApril 2025November 2025Allow700NoNo
19175603AIRCRAFT WINGSApril 2025December 2025Allow810YesNo
19170659Pneumo-Mechanical Landing Gear Deployment System and MethodApril 2025March 2026Allow1100NoNo
19169037VEHICLE PET PADApril 2025October 2025Allow710NoNo
19094999MULTIFUNCTIONAL AND COMBINABLE PLANT STANDMarch 2025June 2025Allow200YesNo
19094852SUPPLEMENTAL LIGHTING METHOD FOR VERTICAL MULTI-LAYER CULTIVATION OF WRAPPER TOBACCO LEAVESMarch 2025May 2025Allow200YesNo
19092571ICE FISHING APPARATUS WITH AUDIBLE AND VISUAL BITE INDICATORMarch 2025February 2026Allow1110NoNo
19091077WEEDLESS LURES, HOOKS, AND CASTING LURESMarch 2025November 2025Allow710NoNo
19087725ICE PROTECTION COATING AND BONDING METHODS THEREOFMarch 2025March 2026Allow1200NoNo
19088487WING-MOUNTED MULTI-STAGE IONIC THRUSTERMarch 2025February 2026Allow1110YesNo
19083969Cat ToyMarch 2025May 2025Allow200YesNo
19082608QUICK-CHANGE SCENT DISBURSEMENT FISHING LUREMarch 2025October 2025Allow600NoNo
19081008Weighted Fishing Bobber DeviceMarch 2025March 2026Allow1210NoNo
19080819AERIAL CONTAINER VALVE WITH TUBULAR DIAPHRAGMMarch 2025September 2025Allow600NoNo
19076275HYDROPONIC GROW ASSEMBLYMarch 2025March 2026Allow1210NoNo
19074640Lure DeviceMarch 2025September 2025Allow600NoNo
19074643FISHING LURE LINE ATTACHMENT SYSTEMMarch 2025February 2026Allow1111YesNo
19072360SYSETEMS, METHODS, AND APPARATUSES FOR TETHER-BASED REACTION CONTROL AND ORBITAL ENERGY REDUCTIONMarch 2025April 2025Allow100YesNo
19072069IN-SITU DETECTION DEVICE AND METHOD FOR CARBON EMISSIONS FROM FARMLANDMarch 2025March 2026Allow1200NoNo
19068935REEL SEATMarch 2025November 2025Allow800NoNo
19065443APPARATUS AND METHOD OF CREATING WETLANDS IN HOT ARID ENVIRONMENTSFebruary 2025April 2025Allow200NoNo
19106684A DEVICE TO REDUCE TURBULENT FLOW SKIN FRICTION USING CARBON DIOXIDE, RIBLETS, AND SUCTION HOLESFebruary 2025October 2025Allow800YesNo
19062829FIXED WING AIRCRAFT WITH TRAILING ROTORS AND T-TAILFebruary 2025September 2025Allow700YesNo
19061596PASSIVE, LOW-DRAG DEVICE FOR PYLON-NACELLE JUNCTURE FLOW SEPARATION MITIGATIONFebruary 2025December 2025Allow1010NoNo
19059055BAIT CHASING SYSTEMFebruary 2025April 2025Allow200NoNo
19058439EXTENDABLE WINGFebruary 2025October 2025Allow810NoNo
19054979WATER CONTROL AND SEAL STRUCTURE OF PET DRINKING PIPEFebruary 2025October 2025Allow800YesNo
19054263MULTI-LAYERED PET TOY AND METHOD OF MAKING SAMEFebruary 2025December 2025Allow1011NoNo
19049336COMBINED CAT HOUSE CAPABLE OF BEING BUILT IN LEVELSFebruary 2025March 2026Allow1310NoNo
19049992PARROT CAGEFebruary 2025September 2025Allow700NoNo
19048300HIGH POWER DISTRIBUTION ARCHITECTURESFebruary 2025March 2026Allow1320YesNo
19048396BIRD FEEDER HAVING REINFORCING RINGFebruary 2025January 2026Allow1210NoNo
19044929ADJUSTABLE STRIKE FISHING TIP UPFebruary 2025November 2025Allow900YesNo
19043774NAVIGATING AIRCRAFT IN A JETSTREAMFebruary 2025April 2025Allow311NoNo
19043452Top Slot Hook Chamber for Soft Plastic Fishing LuresFebruary 2025October 2025Allow800NoNo
19042416SYSTEM FOR INSPECTION OF A REGION AND METHOD THEREOFJanuary 2025January 2026Allow1110YesNo
19043193LIGHTER THAN AIR BALLOON SYSTEMS AND METHODSJanuary 2025November 2025Allow900NoNo
19043353PET TOYJanuary 2025April 2025Allow200NoNo
19040517VTOL AIRCRAFT WITH TILTING ROTORS AND TILTING DUCTED FANSJanuary 2025October 2025Allow810NoNo
19037827PROPULSION SYSTEMS AND VEHICLES USING THE SAMEJanuary 2025January 2026Allow1210NoNo
19037862METHOD FOR DETERMINING AT LEAST ONE POSITION OF A MOBILE STRUCTURE OF AN AIRCRAFT FROM ITS SPEED AND AIRCRAFT COMPRISING A DEVICE FOR EXECUTING ITJanuary 2025March 2026Allow1310YesNo
18998276Absorbent Compositions, Methods of Forming the Same, and Animal Litter Prepared with Such CompositionsJanuary 2025March 2026Allow1300NoNo
19036510EQUINE HALTER ATTACHMENTJanuary 2025September 2025Allow800NoNo
19035730FISHING LURE WITH BAIT COMPARTMENT AND METHOD OF USEJanuary 2025January 2026Allow1210NoNo
19034465Leading-Edge Ducted Fan Thrust Reduction SystemJanuary 2025March 2026Allow1411YesNo
19029571Cat Litter Box Convenient for Taking out and locking Cat Litter BinJanuary 2025April 2025Allow300NoNo
19022123BLENDED WING AIRCRAFTJanuary 2025July 2025Allow610YesNo
19021670TRANSPORT OF PASSENGERS WITH REDUCED MOBILITYJanuary 2025November 2025Allow1010NoNo
19019183Automated Contamination-Free Seed Sampler And Methods Of Sampling, Testing And Bulking SeedsJanuary 2025March 2026Allow1410YesNo
19016295REMOVABLE PLANT HANGERJanuary 2025October 2025Allow900YesNo
19016906Systems and Methods For Satellite Thermal ManagementJanuary 2025August 2025Allow700YesNo
19014688UTILIZING MULTI-DIRECTIONAL ENERGY-ABSORBING LANDING GEAR FOR VERTICAL TAKEOFF AND LANDINGJanuary 2025December 2025Allow1110NoNo
18992415AERIAL PAYLOAD DEPLOYMENT SYSTEM AND METHOD OF OPERATING THEREOFJanuary 2025January 2026Allow1300NoNo
19012270PET GARMENTJanuary 2025May 2025Allow410NoNo
19009168ANIMAL HEALTH AND SAFETY SYSTEM AND METHODJanuary 2025May 2025Allow400NoNo
19009271ASSEMBLY FOR REINFORCING THE FUSELAGE OF AN AIRCRAFT WHEN REMOVING A REMOVABLE PANELJanuary 2025September 2025Allow801YesNo
19008797PET ELIZABETHAN COLLARJanuary 2025March 2025Allow200NoNo
19008417Modular, configurable airframe system for heavy lift rotary wing UAVJanuary 2025March 2026Allow1410NoNo
19003522APPARATUS AND METHOD FOR GROWING VEGETATION IN HOT ARID COASTAL ENVIRONMENTSDecember 2024November 2025Allow1100NoNo
19000589ELECTRONIC FENCE BASED ON POSITIONING ASSEMBLYDecember 2024February 2025Allow200NoNo
18999997ANGLED PLANAR BOARD AND SET CONFIGURED TO AVOID FISHING LINE ENTANGLEMENTDecember 2024March 2026Allow1510NoNo
18999510METHOD AND APPARATUS FOR DEPLOYING, ACTUATING AND RETRIEVING A PESTICIDE CANISTERDecember 2024November 2025Allow1010NoNo
18987007DISPLAY SYSTEM FOR VISUALIZING FISH STRIKE DATA IN ELECTRIC REELSDecember 2024October 2025Allow1000NoNo
18986417SUPPORT FOR UPHOLSTERED FURNITURE, SPECIFICALLY TO CONTRAST BED BUGSDecember 2024March 2026Abandon1510NoNo
18876473SYSTEM AND METHOD FOR MONITORING CLEANING PROCESS IN MILKING INSTALLATIONDecember 2024October 2025Allow1000NoNo
18982323INTELLIGENT FISHING REELDecember 2024January 2026Allow1310YesNo
18979471SYSTEM AND METHOD FOR IDENTIFYING, TRACKING, & MONITORING BEHAVIORS OF LABORATORY ANIMALS WITHIN AN ANIMAL CAGEDecember 2024August 2025Allow801NoNo
18974292ANIMAL TRAINING METHOD, APPARATUS, AND SYSTEM FOR ACHIEVING HEELING BEHAVIORDecember 2024March 2026Allow1510NoNo
18974479SYNTHETIC SOIL SUBSTRATE SYSTEM FOR GROWING A PLANTDecember 2024August 2025Allow900YesNo
18971626TURBOSHAFT ENGINE POWERED QUADROTOR DRONEDecember 2024July 2025Allow710NoNo
18972528CLICKER TRAINING RIDING CROPDecember 2024August 2025Allow800NoNo
18972319RIDING SADDLE WITH DAMPED STIRRUP HOLDERDecember 2024January 2026Allow1301NoNo
18968818METHOD FOR PRODUCING MYCELIAL SHEETDecember 2024February 2026Allow1510NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 3644.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
263
Examiner Affirmed
147
(55.9%)
Examiner Reversed
116
(44.1%)
Reversal Percentile
89.5%
Higher than average

What This Means

With a 44.1% 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
778
Allowed After Appeal Filing
298
(38.3%)
Not Allowed After Appeal Filing
480
(61.7%)
Filing Benefit Percentile
82.3%
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, 38.3% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the top 25% across the USPTO, indicating that filing appeals is particularly effective here. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

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 3644 - Prosecution Statistics Summary

Executive Summary

Art Unit 3644 is part of Group 3640 in Technology Center 3600. This art unit has examined 19,496 patent applications in our dataset, with an overall allowance rate of 74.7%. Applications typically reach final disposition in approximately 26 months.

Comparative Analysis

Art Unit 3644's allowance rate of 74.7% places it in the 43% 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 3644 receive an average of 1.33 office actions before reaching final disposition (in the 12% percentile). The median prosecution time is 26 months (in the 75% 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.