USPTO Art Unit 1777 Prosecution Statistics

Art Unit Information

Art Unit: 1777
Group: 1770
Tech Center: 1700
Total Cases: 11,206
Last Active: February 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19053529Dynamic Adjustment Of Algorithms For Separation And Collection Of Blood ComponentsFebruary 2025July 2025Allow500NoNo
19014185SOLID-LIQUID SEPARATION MECHANISM AND SOLID-LIQUID SEPARATION METHOD FOR GRAIN FERMENTATIONJanuary 2025March 2025Allow200NoNo
18879470An Equipment for In-situ Restoration of SedimentDecember 2024March 2025Allow300NoNo
19001573MAGNETIC RESPONSE FIBER MATERIAL AND ITS PREPARATION METHOD AND APPLICATIONDecember 2024April 2025Allow401NoNo
18867141DIALYSIS SYSTEM HAVING ENHANCED VALVE FEATURESNovember 2024April 2025Allow500NoNo
18893058PROCESS OF PURIFICATION OF PROTEINSeptember 2024January 2025Allow400NoNo
18849413FILTRATION MEMBRANE UNIT, HOLDER HOLDING SAME, FILTRATION SYSTEM INCLUDING FILTRATION MEMBRANE UNIT AND HOLDER, AND FILTRATION TREATMENT APPARATUS INCLUDING PLURALITY OF FILTRATION SYSTEMSSeptember 2024February 2025Allow500NoNo
18824560KITCHEN WASTE WASTEWATER TREATMENT EQUIPMENTSeptember 2024October 2024Allow200NoNo
18805922INTEGRATED RAPID TREATMENT SYSTEM FOR NUCLEAR MEDICAL RADIOACTIVE WASTEWATER AND APPLICATION METHOD THEREOFAugust 2024October 2024Allow200NoNo
18806298SYSTEMS AND METHODS FOR GENERATING LEADAugust 2024April 2025Allow811YesNo
18804147METHOD FOR RECYCLING COPPER-CONTAINING WASTEWATER FROM MICRO-ETCHINGAugust 2024November 2024Allow300NoNo
18797446SULFUR-MOLYBDENUM CLUSTER MODIFIED MOF MATERIAL AND PREPARATION METHOD AND APPLICATION THEREOFAugust 2024October 2024Allow200NoNo
18786770Large-flux Ultra-fine Grid System with Non-rotating Screen PlatesJuly 2024November 2024Allow310NoNo
18785323Treatment Method for Complete Harmless Treatment of Activated Sludge and Complete Resource Utilization of Activated Sludge's ProductsJuly 2024December 2024Allow410NoNo
18782638METHOD FOR FROTH-CONTROLLED FLOTATION OF ARGILLACEOUS LEPIDOLITE OREJuly 2024January 2025Allow610NoNo
18773816Fluid Treatment Tank Having A Laser Welded Distributor PlateJuly 2024May 2025Allow1010NoNo
18769993DAIRY WASTEWATER TREATMENT SYSTEM AND METHODJuly 2024May 2025Allow1000NoNo
18768193WATER TREATMENT METHOD FOR ADSORBING METAL IONSJuly 2024September 2024Allow210NoNo
18767289METAL ION REMOVAL METHODJuly 2024September 2024Allow310NoNo
18759868DEVICE FOR SCALE PREVENTION IN WATER SYSTEMS INCORPORATING MAGNETIC FIELD EXPOSURE AND METHODJune 2024November 2024Allow510NoNo
18758193MULTIPLE THREADED CONNECTOR FOR FILTERJune 2024May 2025Allow1110NoNo
18756677PRASEODYMIUM-DOPED UPCONVERSION PHOSPHORJune 2024September 2024Allow300NoNo
18755130PEROXYFORMIC ACID COMPOSITIONS FOR MEMBRANE FILTRATION CLEANING IN ENERGY SERVICESJune 2024May 2025Allow1010NoNo
18751125HIGH REJECTION SPIRAL WOUND ELEMENTS WITH PROTECTIVE FEATURESJune 2024March 2025Allow901YesNo
18747971CLASS OF NITROGEN-CONTAINING HETEROCYCLIC POLYMERS, A CLASS OF POLYMER MEMBRANES AND APPLICATIONS THEREOFJune 2024September 2024Allow310NoNo
18747386Outdoor Water PurifierJune 2024September 2024Allow300NoNo
18743123DEVICE AND METHOD FOR CONTROLLING DIFFUSION OF MPS CARRIED WITH ARGS IN WASTE WATER TREATMENT SYSTEMJune 2024September 2024Allow310YesNo
18736083SYSTEMS AND METHODS FOR THE PREPARATION OF PLANT DERIVED PRODUCTS USING OSMOSIS TECHNIQUESJune 2024December 2024Allow610NoNo
18731664METHOD FOR SEPARATION OF PARTICLES SUSPENDED IN A FLUIDJune 2024May 2025Allow1110NoNo
18732310FERRATE BASED WATER TREATMENTJune 2024March 2025Allow1001NoNo
18678363DEVICE AND SYSTEM FOR WATER DESALINIZATIONMay 2024December 2024Allow610NoNo
18676235METHOD FOR CONTROLLING HOLLOW FIBER NANOFILTRATION MEMBRANE SYSTEM WITH CONTROLLABLE POWER CONSUMPTIONMay 2024October 2024Allow410NoNo
18674800SALINE WASTEWATER TREATMENT METHOD AND SYSTEMMay 2024October 2024Allow510NoNo
18666495SOLAR STILL WATER TREATMENT USING CARBON-BASED EFFERVESCENT TABLETS AND RELATED METHODSMay 2024December 2024Allow701NoNo
18662697WATER DESALINATION AND ELECTRICAL POWER GENERATION UTILIZING GRAVITATIONAL FLOW AND GEOTHERMAL ENERGYMay 2024November 2024Allow610YesNo
18653906COMPOSITIONS AND METHODS FOR PLASMAPHERESISMay 2024October 2024Allow501NoNo
18653903COMPOSITIONS AND METHODS FOR PLASMAPHERESISMay 2024February 2025Allow920YesNo
18653214POLYMER-HYDROXYAPATITE COMPOSITE MEMBRANESMay 2024May 2025Allow1210NoNo
18651805SYSTEM AND PROCESS FOR REDUCING PFAS AND MICROPLASTICS IN BIOSOLIDS USING HYDRODYNAMIC CAVITATION AND FOAM FRACTIONATIONMay 2024January 2025Allow901NoNo
18652528HOLLOW FIBER MEMBRANE AND METHOD FOR CLOSING THE SAMEMay 2024February 2025Allow1011YesNo
18648761METHOD FOR REMOVING FLUORINE-CONTAINING COMPOUND FROM WASTE WATERApril 2024April 2025Allow1110NoNo
18649157REVERSE OSMOSIS SYSTEMApril 2024February 2025Allow910NoNo
18648343Membrane Fouling Early Warning Method and Device Based on Machine LearningApril 2024July 2024Allow300NoNo
18640022SYSTEMS AND METHODS OF BIOGENIC METHANE MITIGATIONApril 2024January 2025Allow911YesNo
18638505MIXED MATRIX MEMBRANES CONTAINING COVALENT TRIAZINE FRAMEWORKSApril 2024August 2024Allow401NoNo
18637521METHOD AND APPARATUS FOR SELF-CONTAINED FLUID CLEANING APPARATUSApril 2024June 2025Allow1410NoNo
18701665SEDIMENTATION PLATE, SEDIMENTATION ASSEMBLY, AND SEDIMENTATION MODULEApril 2024September 2024Allow510YesNo
18631965FILTER ELEMENT MOUNTING STRUCTUREApril 2024June 2024Allow200NoNo
18625139PLUNGING LIQUID JET REACTOR AND WATER TREATMENT SYSTEMApril 2024July 2024Allow300NoNo
18622912Filter Buoy AssemblyMarch 2024October 2024Allow610NoNo
18619937FILTER MONITORING SYSTEMMarch 2024May 2025Allow1321YesNo
18619120DEVICE FOR TREATING URANIUM TAILINGS WITH MICROORGANISMMarch 2024July 2024Allow400NoNo
18618064GRAPHENE MEMBRANE AND METHOD FOR MAKING GRAPHENE MEMBRANEMarch 2024May 2025Abandon1410NoNo
18695863Lamella and Lamellar Module for ClarifierMarch 2024February 2025Allow1100NoNo
18610664Floating Oil Absorption Apparatus and MethodMarch 2024December 2024Abandon811NoNo
18610605OVERLOAD PROTECTION CHAMBER FOR FLUID SEPARATION APPARATUS AND SYSTEMMarch 2024November 2024Allow810NoNo
18605528Hemofilter For In Vivo Blood FiltrationMarch 2024February 2025Allow1110NoNo
18605090TANGENTIAL FLOW FILTRATION SYSTEMS AND METHODSMarch 2024October 2024Allow710NoNo
18603379METHOD FOR PURIFYING BIOLOGICAL DUST SUPPRESSANT BY TWO-STAGE ULTRAFILTRATIONMarch 2024January 2025Allow1110YesNo
18601192SYSTEMS AND METHODS FOR WATER FILTRATIONMarch 2024March 2025Allow1321YesNo
18601804Controlled Removal of Ions from Aqueous FluidMarch 2024March 2025Abandon1310NoNo
18599377Dynamic Adjustment Of Algorithms For Separation And Collection Of Blood ComponentsMarch 2024November 2024Allow800NoNo
18599312FILTER DEVICE, FAUCET WATER PURIFIER AND SPRAYING PROCESS THEREOFMarch 2024August 2024Allow510NoNo
18599330MEMBRANE FILTER AND FILTERING METHODMarch 2024June 2024Allow400NoNo
18595901METHOD AND SYSTEM FOR SUSTAINABLE BRINE TREATMENT AND HEAVY METAL PURIFICATION USING RECYCLED CARBON FIBERMarch 2024August 2024Allow501NoNo
18595191APPARATUS FOR SUPPLEMENTING FUNCTION OF ENDOCRINE GLANDSMarch 2024May 2025Allow1410NoNo
18594938Automated Chromatography Column Switching Control Based on Pressure DetectionMarch 2024June 2025Allow1620NoNo
18588538ENHANCED FLOCCULATION OF INTRACTABLE SLURRIES USING SILICATE IONSFebruary 2024January 2025Allow1110NoNo
18586850COOLING LOOP WITH A SUPERCRITICAL FLUID SYSTEM USING COMPRESSED REFRIGERANT FLUID FLOW WITH A POSITIVE JOULE THOMSON COEFFICIENTFebruary 2024July 2025Allow1620NoNo
18585570TiO2-Surface Modified Bio-AdsorbentFebruary 2024June 2024Allow400NoNo
18584581TRI-METALLIC ORGANIC FRAMEWORK (MOF) COMPLEX AS A REDUCTION CATALYSTFebruary 2024June 2024Allow401NoNo
18581673Method of Refining and Recovering Barium Sulfate from Contaminated Water SourcesFebruary 2024March 2025Allow1310NoNo
18581246SYNTHESIS OF NON-IONIC HYDROGELS FOR NON-IONIC POLLUTANT REMOVALFebruary 2024July 2024Allow511YesNo
18444085SINGLE-STAGE WATER TREATMENT SYSTEMFebruary 2024June 2025Abandon1610NoNo
18444479BI-LAYERED SUPERHYDROPHOBIC MEMBRANE FOR WATER FILTRATIONFebruary 2024July 2024Allow510NoNo
18441894METHOD AND SYSTEM FOR PARTIALLY OR FULLY AUTOMATED BUOYANCY-ASSISTED SEPARATIONFebruary 2024June 2024Allow400NoNo
18439151HYDROPHOBIC MEMBRANES AND MEMBRANE DISTILLATION METHODSFebruary 2024January 2025Allow1110NoNo
18437727DEVICE SUITABLE FOR VACUUM ASSISTED FILTRATIONFebruary 2024September 2024Allow800YesNo
18435990FUEL FILTERFebruary 2024March 2025Allow1410NoNo
18431667SPACERS FOR ION-EXCHANGE DEVICEFebruary 2024February 2025Allow1310NoNo
184316963D PRINTED SPACERS FOR ION-EXCHANGE DEVICEFebruary 2024February 2025Allow1310NoNo
18430460AFFINITY MEMBRANE AND METHOD OF PREPARATIONFebruary 2024June 2025Allow1610NoNo
18429699METHOD OF USING NANOFILTRATION AND REVERSE OSMOSIS TO REMOVE CHEMICAL CONTAMINANTSFebruary 2024February 2025Allow1220NoNo
18414850DEGASSING UNITJanuary 2024March 2025Allow1400NoNo
18413994HEAT EXCHANGER INTEGRATION WITH MEMBRANE SYSTEM FOR EVAPORATOR PRE-CONCENTRATIONJanuary 2024July 2024Allow610NoNo
18411415MODULAR EXTRACTION APPARATUSJanuary 2024October 2024Allow910YesNo
18411963VACUUM ASSISTED FILTRATIONJanuary 2024June 2025Allow1711NoNo
18411289FABRICATION OF FILTRATION MEMBRANESJanuary 2024October 2024Allow1010NoNo
18410488SMART DEHYSALTER SYSTEMJanuary 2024October 2024Allow900NoNo
18409114CLEAN WATER PRODUCTION WITH ENHANCED ELECTRICITYJanuary 2024March 2024Allow200NoNo
18407612BACKFLUSH FILTER ASSEMBLYJanuary 2024September 2024Allow810YesNo
18407456WATER PURIFICATION, STERILIZATION AND DISINFECTION LAMPJanuary 2024April 2024Allow300NoNo
18577901APPARATUS AND PROCESS FOR REMOVING PFAS AND PFAS COMPOUNDS FROM WATERJanuary 2024June 2024Allow500NoNo
18408372MICROPOROUS POLYOLEFIN MEMBRANES FROM BESPOKE SOLVENTSJanuary 2024August 2024Allow811YesNo
18408471Salt Separation and Destruction of PFAS Utilizing Reverse Osmosis and Salt SeparationJanuary 2024March 2025Allow1511NoNo
18400457PLEATED FLUID FILTER ELEMENT AND METHODSDecember 2023January 2025Allow1310NoNo
18400507ABSOLUTE BLOOD VOLUME ESTIMATION DEVICE AND METHODDecember 2023November 2024Allow1100NoNo
18574861DISPOSAL OF WATER SOLUBLE WASTE IN ADDITIVE MANUFACTURINGDecember 2023August 2024Allow801YesNo
18396765Filtration System for Preparation of Fluids for Medical ApplicationsDecember 2023April 2025Allow1501NoNo
18391309Engines Structure For Water Molecules Impulse, Order and Control For Agriculture PurposesDecember 2023June 2025Allow1821NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1777.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
315
Examiner Affirmed
187
(59.4%)
Examiner Reversed
128
(40.6%)
Reversal Percentile
81.2%
Higher than average

What This Means

With a 40.6% 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
825
Allowed After Appeal Filing
290
(35.2%)
Not Allowed After Appeal Filing
535
(64.8%)
Filing Benefit Percentile
61.2%
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, 35.2% 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 1777 - Prosecution Statistics Summary

Executive Summary

Art Unit 1777 is part of Group 1770 in Technology Center 1700. This art unit has examined 11,206 patent applications in our dataset, with an overall allowance rate of 63.8%. Applications typically reach final disposition in approximately 33 months.

Comparative Analysis

Art Unit 1777's allowance rate of 63.8% places it in the 19% percentile among all USPTO art units. This art unit has a significantly lower allowance rate than most art units at the USPTO.

Prosecution Patterns

Applications in Art Unit 1777 receive an average of 2.04 office actions before reaching final disposition (in the 69% percentile). The median prosecution time is 33 months (in the 28% 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 more office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is longer 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.