USPTO Examiner TRAN VIVIAN AILINH - Art Unit 1794

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18442749ANALYTE SENSOR AND A METHOD FOR ITS PRODUCINGFebruary 2024December 2025Allow2210YesNo
18378835SYSTEMS AND METHODS FOR MONITORING OF ACETONEOctober 2023October 2025Allow2400YesNo
18475237NON-ENZYMATIC ELECTROCHEMICAL SENSOR FOR MEASURING ANALYTESSeptember 2023October 2024Allow1310NoNo
18230113DESIGN AND METHODS FOR MEASURING ANALYTES USING NANOFABRICATED DEVICEAugust 2023August 2024Allow1310YesNo
18265788NANOCOMPOSITE OF MOLYBDENUM OXIDE AND CONDUCTIVE CARBON FOR FORMALDEHYDE GAS DETECTION AT ROOM TEMPERATUREJune 2023October 2025Allow2810NoNo
18253458ACCELERATED EVALUATION METHOD FOR ANODEMay 2023June 2025Allow2500YesNo
18185593CO2 MASS ESTIMATION SYSTEM, EXHAUST GAS COMPOSITION RATIO ESTIMATION METHOD, AND CO2 MASS ESTIMATION METHODMarch 2023January 2026Allow3411YesNo
18176658GAS SENSORMarch 2023September 2025Allow3010NoNo
18165395NANO- AND/OR MICRO-STRUCTURED PRINTED ELECTRODESFebruary 2023September 2025Allow3130NoNo
18159830GAS SENSOR AND CONCENTRATION CORRECTION METHOD FOR USE IN GAS SENSORJanuary 2023September 2025Allow3211YesNo
18157853SENSOR ELEMENT AND GAS SENSORJanuary 2023November 2025Allow3420NoNo
18154357GAS SENSORJanuary 2023November 2025Abandon3411NoNo
18055779SENSING SYSTEM WITH IMPROVED FLUIDICS CONTROLNovember 2022February 2026Allow3911NoNo
17981067KIT AND METHOD FOR DETECTING CORONAVIRUSNovember 2022August 2025Allow3411YesNo
17969614GRAPHENE-FUNCTIONALIZED SENSOR SURFACES AND RELATED METHODSOctober 2022September 2025Abandon3510NoNo
17938372COUNTING METHOD AND COUNTING APPARATUSOctober 2022September 2025Abandon3501NoNo
17953245SYSTEMS AND METHODS FOR DETECTING AND MEASURING OXIDIZING COMPOUNDS IN TEST FLUIDSSeptember 2022October 2024Abandon2410NoNo
17856254BiosensorJuly 2022December 2025Abandon4120NoNo
17856816ELECTROCHEMICAL SENSORS FOR ANALYTE DETECTION IN WATER AND REFERENCE CORRECTION METHODJuly 2022March 2026Allow4411NoNo
17839085DESIGN AND METHODS FOR MEASURING ANALYTES USING NANOFABRICATED DEVICEJune 2022April 2023Allow1010YesNo
17756947AMPEROMETRIC SENSOR FOR MEASURING FREE CHLORINE WITH REFERENCE ELECTRODE HAVING A GOLD ELECTRODE SURFACE COMPOSED OF A STRING OF ELECTRICALLY CONNECTED, SPACED APART SURFACE PARTSJune 2022March 2025Abandon3310NoNo
17825080GAS SENSORMay 2022March 2025Allow3410NoNo
17779281CARBON DIOXIDE SENSORMay 2022January 2026Allow4430YesNo
17750880Amplifier System and Controls for Dielectrophoretic Tracking in Microfluidic DevicesMay 2022January 2025Allow3210YesNo
17778335FLUID TRANSFER SYSTEM AND METHOD OF FORMING THE SAMEMay 2022March 2025Abandon3401NoNo
17777006ELECTROCHEMICAL AUTHENTICATION METHODMay 2022October 2025Allow4120YesNo
17732833FINE PARTICLE MEASURING SYSTEMApril 2022June 2025Abandon3811NoNo
17766360Method for Operating a Wide-Band Lambda ProbeApril 2022October 2025Allow4221YesNo
17656651BIOSENSING ELEMENT, BIOSENSING MODULE, BIOSENSING DEVICE AND BIOSENSING METHODMarch 2022March 2025Abandon3610NoNo
17636756SYSTEM INCLUDING A BOX AND AN INSTRUMENTED CONTAINER FOR DETECTING THE PRESENCE OF MICRO-ORGANISMS IN A LIQUID SAMPLEFebruary 2022December 2025Abandon4611NoNo
17636601METHOD AND DEVICE FOR DETERMINING AT LEAST ONE ANALYTE SPECIES IN AN ANALYTE SOLUTIONFebruary 2022October 2025Abandon4421NoNo
17635880COLORIMETRIC BIOSENSOR, DISCOLORATION KIT, AND SENSING METHOD USING SAMEFebruary 2022March 2025Abandon3701NoNo
17672007CHEMICAL SENSOR APPARATUSFebruary 2022August 2025Abandon4220NoNo
17583722SMALL PARTICLE MEASUREMENT SYSTEMJanuary 2022December 2025Abandon4721NoNo
17577426SENSOR ELEMENT OF NOx SENSORJanuary 2022September 2024Allow3210YesNo
17577423SENSOR ELEMENT OF GAS SENSORJanuary 2022September 2024Allow3210YesNo
17557853GAS SENSOR AND METHOD OF MANUFACTURE THEREOFDecember 2021March 2025Allow3920NoNo
17544250ISOELECTRIC FOCUSING DEVICES AND FIXTURESDecember 2021June 2025Abandon4201NoNo
17596256CONTROL SYSTEM AND METHODDecember 2021January 2026Allow5012NoNo
17539867GLYCAN PROFILING UTILIZING CAPILLARY ELECTROPHORESISDecember 2021September 2025Allow4610NoNo
17531870GAS SENSORNovember 2021March 2025Allow4010NoNo
17612605SENSING INTERACTIONS BETWEEN MOLECULAR ENTITIES AND NANOPORESNovember 2021January 2026Allow5011YesNo
17519083Macrocycle Embedded Organic Electronic Materials, Composites, and Compositions for Chemical SensingNovember 2021April 2025Allow4110YesNo
17509485METHOD FOR CALIBRATING A DEVICE FOR MEASURING THE CONCENTRATION OF CREATININEOctober 2021December 2023Allow2621YesNo
17451283NANOPORE-BASED SEQUENCING WITH VARYING VOLTAGE STIMULUSOctober 2021January 2025Allow3910NoNo
17501292SENSORS FOR 3-HYDROXYBUTYRATE DETECTIONOctober 2021June 2025Allow4411YesNo
17450277SOx CONCENTRATION ACQUIRING APPARATUS OF INTERNAL COMBUSTION ENGINEOctober 2021April 2025Allow4210YesNo
17495073METHOD FOR DETERMINING A CONCENTRATION OF A GAS COMPONENT AND CONTROL DEVICE CONFIGURED THEREFOREOctober 2021June 2025Allow4411YesNo
17487027GAS SENSOR AND METHOD FOR CONTROLLING GAS SENSORSeptember 2021May 2025Abandon4411NoNo
17487009GAS SENSORSeptember 2021July 2024Abandon3420NoNo
17487021SENSOR ELEMENT AND GAS SENSORSeptember 2021November 2024Abandon3820NoNo
17465941LIMITING CURRENT GAS SENSOR AND MANUFACTURING METHOD THEREOFSeptember 2021January 2025Abandon4140NoNo
17433569ELECTRODE SUBSTRATE, MEASURING DEVICE, REMOVAL TOOL, AND MEASURING METHODAugust 2021June 2025Allow4621YesNo
17418577GRAPHENE CHANNEL MEMBER COMPRISING CADAVERINE OLFACTORY RECEPTOR AND SENSOR COMPRISING SAMEAugust 2021October 2024Abandon3910NoNo
17356968GAS SENSOR ELEMENT AND GAS SENSORJune 2021September 2024Allow3910NoNo
17353870GAS SENSORJune 2021September 2023Allow2720YesNo
17303058HANDHELD PORTABLE OXYGEN MONITORMay 2021December 2024Allow4330YesNo
17286366ELECTRIC FIELD-ASSISTED JUNCTIONS FOR SEQUENCINGApril 2021March 2025Allow4720YesNo
17213775GAS SENSORMarch 2021November 2024Allow4440YesNo
17211320BIOLOGICAL CHIP TESTING SYSTEMMarch 2021June 2025Abandon5130NoNo
17278436ELECTROLYTE ANALYZING DEVICEMarch 2021June 2024Allow3910YesNo
17205602GAS SENSORMarch 2021December 2023Abandon3311NoNo
17205209SENSOR ELEMENT AND GAS SENSORMarch 2021November 2023Allow3211YesNo
17205633SENSOR ELEMENT AND GAS SENSORMarch 2021August 2023Allow2920YesNo
17205199SENSOR ELEMENT AND GAS SENSORMarch 2021April 2024Allow3730YesNo
17205617SENSOR ELEMENT AND GAS SENSORMarch 2021November 2023Allow3211YesNo
17276699GAS SENSORMarch 2021March 2025Allow4840NoNo
17170940GAS SENSORFebruary 2021February 2023Allow2401YesNo
17267184INDIGO-BASED POLYMERS FOR USE IN SWCNTS ELECTRONICSFebruary 2021September 2024Allow4321YesNo
17168330CERAMIC STRUCTURED BODY AND SENSOR ELEMENT OF GAS SENSORFebruary 2021June 2024Abandon4120NoNo
17143188GAS SENSORJanuary 2021January 2023Allow2501NoNo
17127296MEMBRANE-BASED WATER QUALITY SENSORDecember 2020October 2023Abandon3420NoNo
17113432METAL TERMINALDecember 2020September 2023Allow3320YesNo
17068278METHOD OF PRODUCING GAS SENSOR ELEMENTOctober 2020December 2023Allow3820YesNo
17043708HEAT-DISSIPATING APPARATUS OF ELECTROPHORESIS TANKSeptember 2020April 2023Abandon3120YesNo
17033128Electrochemical Gas SensorSeptember 2020March 2023Abandon2920NoYes
17030285Devices and Methods for Processing Fluid SamplesSeptember 2020December 2024Abandon5130NoNo
17007640LIQUID HEATER APPARATUSAugust 2020October 2023Allow3720YesNo
16991082SENSOR ELEMENTAugust 2020January 2024Abandon4241NoNo
16992054METHODS TO AUTOMATICALLY CALIBRATE PH SENSORS WITHOUT SAMPLINGAugust 2020January 2024Allow4121YesNo
16966750GAS SENSOR ELEMENT AND GAS SENSORJuly 2020February 2024Abandon4340YesNo
16943914Flip Chip Thin Film Hybrid Screen Printed Electrode Test StripJuly 2020December 2022Abandon2910NoNo
16931279NON-ENZYMATIC ELECTROCHEMICAL SENSOR FOR MEASURING ANALYTESJuly 2020January 2024Abandon4221NoNo
16958297SENSOR ELEMENT AND GAS SENSORJune 2020June 2023Abandon3540NoNo
16956008GAS SENSOR ELEMENT, AND GAS SENSORJune 2020September 2024Allow5160YesYes
16864462SOLID ELECTROLYTE, MANUFACTURING METHOD THEREOF, AND GAS SENSORMay 2020November 2022Allow3021YesNo
16758354PULSE-DRIVEN CAPACITIVE DETECTION FOR FIELD-EFFECT TRANSISTORSApril 2020June 2023Abandon3721NoNo
16853207SENSOR ELEMENT AND GAS SENSORApril 2020September 2023Allow4141YesNo
16756029DETECTING AN ANALYTE IN THE PRESENCE OF AN INTERFERENTApril 2020September 2023Allow4120YesNo
16829060SENSOR ELEMENT AND GAS SENSORMarch 2020September 2023Abandon4130YesNo
16819813GAS SENSOR AND SENSOR ELEMENTMarch 2020May 2022Allow2630YesNo
16813812COMPONENT CONCENTRATION MEASURING DEVICE AND COMPONENT CONCENTRATION MEASURING METHODMarch 2020August 2023Abandon4121NoNo
16645579Gas Sensor Device With High Sensitivity At Low Temperature And Method Of Fabrication ThereofMarch 2020December 2024Allow5760YesNo
16799998GAS SENSORFebruary 2020April 2024Allow4930YesNo
16641744ELECTROANALYTICAL INSTRUMENT FOR DETERMINING BY AMPEROMETRY THE PRESENCE OR QUANTITY OF AN ANALYTE IN AN AQUEOUS SAMPLEFebruary 2020June 2024Allow5231NoNo
16791895SYSTEMS AND METHODS FOR DETECTING AND MEASURING OXIDIZING COMPOUNDS IN TEST FLUIDSFebruary 2020January 2023Abandon3550YesYes
16786082GAS SENSOR ELEMENT AND GAS SENSORFebruary 2020March 2023Allow3720YesNo
16631104COMPOSITION, ELECTRODE, AND FABRICATION METHOD FOR PHOSPHATE SENSINGJanuary 2020December 2023Allow4731YesNo
16740825GAS SENSORJanuary 2020March 2024Abandon5040YesNo
16715110SENSOR ELEMENTDecember 2019September 2022Allow3320YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner TRAN, VIVIAN AILINH.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
6
Examiner Affirmed
3
(50.0%)
Examiner Reversed
3
(50.0%)
Reversal Percentile
71.2%
Higher than average

What This Means

With a 50.0% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is above the USPTO average, indicating that appeals have better success here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
18
Allowed After Appeal Filing
2
(11.1%)
Not Allowed After Appeal Filing
16
(88.9%)
Filing Benefit Percentile
14.2%
Lower 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, 11.1% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the bottom 25% across the USPTO, indicating that filing appeals is less effective here than in most other areas.

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 shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner TRAN, VIVIAN AILINH - Prosecution Strategy Guide

Executive Summary

Examiner TRAN, VIVIAN AILINH works in Art Unit 1794 and has examined 159 patent applications in our dataset. With an allowance rate of 50.3%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 41 months.

Allowance Patterns

Examiner TRAN, VIVIAN AILINH's allowance rate of 50.3% places them in the 12% percentile among all USPTO examiners. This examiner is less likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by TRAN, VIVIAN AILINH receive 2.92 office actions before reaching final disposition. This places the examiner in the 85% percentile for office actions issued. This examiner issues more office actions than most examiners, which may indicate thorough examination or difficulty in reaching agreement with applicants.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by TRAN, VIVIAN AILINH is 41 months. This places the examiner in the 21% percentile for prosecution speed. Applications take longer to reach final disposition with this examiner compared to most others.

Interview Effectiveness

Conducting an examiner interview provides a +47.1% benefit to allowance rate for applications examined by TRAN, VIVIAN AILINH. This interview benefit is in the 91% percentile among all examiners. Recommendation: Interviews are highly effective with this examiner and should be strongly considered as a prosecution strategy. Per MPEP § 713.10, interviews are available at any time before the Notice of Allowance is mailed or jurisdiction transfers to the PTAB.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 18.0% of applications are subsequently allowed. This success rate is in the 17% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 21.2% of cases where such amendments are filed. This entry rate is in the 27% percentile among all examiners. Strategic Recommendation: This examiner shows below-average receptiveness to after-final amendments. You may need to file an RCE or appeal rather than relying on after-final amendment entry.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 0.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 4% percentile among all examiners. Note: Pre-appeal conferences show limited success with this examiner compared to others. While still worth considering, be prepared to proceed with a full appeal brief if the PAC does not result in favorable action.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 60.0% of appeals filed. This is in the 35% percentile among all examiners. Of these withdrawals, 33.3% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows below-average willingness to reconsider rejections during appeals. Be prepared to fully prosecute appeals if filed.

Petition Practice

When applicants file petitions regarding this examiner's actions, 76.9% are granted (fully or in part). This grant rate is in the 82% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 8% percentile). This examiner rarely makes examiner's amendments compared to other examiners. You should expect to make all necessary claim amendments yourself through formal amendment practice.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 2.5% of allowed cases (in the 71% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

  • Prepare for rigorous examination: With a below-average allowance rate, ensure your application has strong written description and enablement support. Consider filing a continuation if you need to add new matter.
  • Expect multiple rounds of prosecution: This examiner issues more office actions than average. Address potential issues proactively in your initial response and consider requesting an interview early in prosecution.
  • Prioritize examiner interviews: Interviews are highly effective with this examiner. Request an interview after the first office action to clarify issues and potentially expedite allowance.
  • Plan for extended prosecution: Applications take longer than average with this examiner. Factor this into your continuation strategy and client communications.

Relevant MPEP Sections for Prosecution Strategy

  • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
  • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
  • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
  • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
  • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
  • MPEP § 1214.07: Reopening prosecution after appeal

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.