USPTO Examiner NGUYEN KIET TUAN - Art Unit 2881

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19084627MASS SPECTROMETRY SYSTEM AND METHOD WITH STACKED-RING ION TRANSFER DEVICEMarch 2025June 2025Allow300NoNo
19074174SYSTEM AND METHOD FOR ION PACKET FORMATION, DELIVERY, AND CALIBRATION IN MASS SPECTROMETRYMarch 2025June 2025Allow410NoNo
19074212MASS SPECTROMETRY SYSTEM AND METHOD WITH CONTROLLED ION TRANSFERMarch 2025June 2025Allow310NoNo
19023867AUTOMATIC MAGNETIC IMPURITY SAMPLE ISOLATIONJanuary 2025August 2025Allow701NoNo
18975232APPARATUS FOR SANITIZING A FIBEROPTIC ENDOSCOPEDecember 2024March 2025Allow300NoNo
18799273ION ANALYSIS APPARATUS AND METHODAugust 2024November 2024Allow300NoNo
18675535UNMANNED HUMAN ANALOGUEMay 2024September 2024Allow400NoNo
18668048CHARACTERIZING AND MEASURING IN SMALL BOXES USING XPS WITH MULTIPLE MEASUREMENTSMay 2024December 2024Allow700NoNo
18650681BENCH-TOP TIME OF FLIGHT MASS SPECTROMETERApril 2024December 2024Allow700NoNo
18648278ULTRATHIN CONFORMAL COATINGS FOR ELECTROSTATIC DISSIPATION IN SEMICONDUCTOR PROCESS TOOLSApril 2024October 2025Allow1811YesNo
18643509METHOD AND SYSTEM OF IDENTIFYING AND QUANTIFYING ANTIBODY FRAGMENTATIONApril 2024November 2024Allow700NoNo
18624417Voltage Supply for a Mass AnalyserApril 2024October 2024Allow700NoNo
18617563REUSABLE STRAW AND CASE WITH INTEGRATED CLEANING, DRYING AND SANITIZING MEMBERMarch 2024December 2024Allow900NoNo
18610570HIGH RESOLUTION IMAGING APPARATUS AND METHODMarch 2024September 2024Allow600NoNo
18610673HIGH CONFIDENCE COMPOUND IDENTIFICATION BY LIQUID CHROMATOGRAPHY-MASS SPECTROMETRYMarch 2024November 2024Allow800NoNo
18435492VERIFICATION METHODS AND AGRONOMIC ENHANCEMENTS FOR CARBON REMOVAL BASED ON ENHANCED ROCK WEATHERINGFebruary 2024May 2025Allow1620YesNo
18426207METHOD AND SYSTEM FOR NANOSCALE DATA RECORDINGJanuary 2024May 2025Allow1610NoNo
18400300NANOPARTICLE ANALYSIS FOR ULTRA-LOW LEVEL CONCENTRATIONS OF NANOPARTICLES IN FLUID SAMPLESDecember 2023April 2024Allow300NoNo
18391303APPARATUS AND METHOD FOR AGRICULTURAL CONTAMINANT DETECTIONDecember 2023July 2024Allow710NoNo
18532965PROXIMITY SENSOR FOR ELECTRON BACKSCATTER DIFFRACTION SYSTEMSDecember 2023February 2026Allow2600NoNo
18525048APPARATUS FOR ANALYZING METAL CONTAMINATION OF A WAFER AND A METHOD THEREOFNovember 2023February 2026Allow2600NoNo
18525401DISTORTION OPTIMIZED MULTI-BEAM SCANNING SYSTEMNovember 2023February 2026Allow2600NoNo
18516645ADAPTIVE SPECIMEN IMAGE ACQUISITION USING AN ARTIFICIAL NEURAL NETWORKNovember 2023June 2024Allow700NoNo
18505760ACTIVE PIEZO STABILIZATION OF AN ION TRAPNovember 2023January 2026Allow2600NoNo
18559750SAMPLE SUPPORTS FOR CRYO-ELECTRON MICROSCOPYNovember 2023January 2026Allow2700NoNo
18504720ULTRA-MICRO ELECTRODE FOR ELECTROCHEMICAL ANALYSIS AND METHOD OF MANUFACTURING THE SAMENovember 2023January 2026Allow2700NoNo
18559408High-Voltage Insulating Structure, Charged Particle Gun, and Charged Particle Beam DeviceNovember 2023February 2026Allow2700NoNo
18502683MULTI-BEAM CHARGED PARTICLE SYSTEM AND METHOD OF CONTROLLING THE WORKING DISTANCE IN A MULTI-BEAM CHARGED PARTICLE SYSTEMNovember 2023December 2025Allow2500NoNo
18499548Shape-based proximity effect correction method for throughput, patterning fidelity, and contrast enhancement of particle beam lithography and imaging structureNovember 2023December 2025Allow2600NoNo
18498970SUBSTRATE STRESS MANAGEMENT USING VARIABLE ENERGY AND VARIABLE DOSE IMPLANTATIONOctober 2023December 2025Allow2600NoNo
18493889EUV LIGHT SOURCE WITH A SEPARATION DEVICEOctober 2023December 2023Allow200NoNo
18493961MULTI CHARGED PARTICLE BEAM WRITING APPARATUSOctober 2023November 2025Allow2500NoNo
18554840AUTOMATED METHOD PARAMETER CONFIGURATION FOR DIFFERENTIAL MOBILITY SPECTROMETRY SEPARATIONSOctober 2023December 2025Allow2600NoNo
18378421ENERGY FILTER ELEMENT FOR ION IMPLANTATION SYSTEMS FOR THE USE IN THE PRODUCTION OF WAFERSOctober 2023May 2024Allow700NoNo
18377481DATA INDEPENDENT ACQUISITION WITH PARALLEL ISOLATION MULTIPLEXINGOctober 2023November 2025Allow2500NoNo
18285988BIO-IDENTIFICATION USING LOW RESOLUTION TANDEM MASS SPECTROMETRYOctober 2023December 2025Allow2600NoNo
18474142SAMPLE PROBE SYSTEMS AND ASSOCIATED METHODSSeptember 2023October 2025Allow2500NoNo
18283605MASS SPECTROMETER AND MASS SPECTROMETRY METHODSeptember 2023February 2026Allow2910NoNo
18370158ADJUSTABLE EXIT ANGLE SOURCE FOR IONS AND NEUTRAL PARTICLESSeptember 2023October 2025Allow2500NoNo
18469517SYSTEMS AND APPROACHES FOR SEMICONDUCTOR METROLOGY AND SURFACE ANALYSIS USING SECONDARY ION MASS SPECTROMETRYSeptember 2023August 2024Allow1010NoNo
18466753DETERMINING AN EXPECTED RESPONSE OF A MASS SPECTROMETERSeptember 2023October 2025Allow2500NoNo
18465292C PEPTIDE DETECTION BY MASS SPECTROMETRYSeptember 2023September 2024Allow1210NoNo
18461176MAGNETO-OPTICAL TRAP METHOD AND APPARATUS USING POSITIVE AND NEGATIVE G-FACTORSSeptember 2023March 2024Allow700NoNo
18278544Bent PCB Ion Guide for Reduction of Contamination and NoiseAugust 2023October 2025Allow2500NoNo
18021717MASS SPECTROMETRY CONTROL DEVICE, MASS SPECTROMETRY DEVICE, MASS SPECTROMETRY METHOD AND A NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAMAugust 2023October 2025Allow3200NoNo
18230722OPERATING A GAS FEED DEVICE FOR A PARTICLE BEAM APPARATUSAugust 2023February 2024Allow700NoNo
18364400TIME OF FLIGHT MASS ANALYSER AND METHOD OF TIME OF FLIGHT MASS SPECTROMETRYAugust 2023September 2025Allow2500NoNo
18274597WIDE RANGE ELECTRON IMPACT ION SOURCE FOR A MASS SPECTROMETERJuly 2023May 2024Allow1000NoNo
18357872ULTRA-COMPACT ION MASS SPECTROMETER FOR SPACE AND LABORATORY PLASMA MEASUREMENTSJuly 2023September 2025Allow2600NoNo
18357686DEEP STRUCTURE SIGNAL DETECTION AND ENHANCEMENT BY SEPARATION TO UPPER (TOPOGRAPHY) AND LOWER (BOTTOM) AREAS FOR ROBUST BLIND DENOISING SELF SUPERVISION (BDSS)July 2023September 2025Allow2600NoNo
18222280ROTATABLE TEM GRID HOLDER FOR IMPROVED FIB THINNING PROCESSJuly 2023August 2025Allow2500NoNo
18272295HAZARDOUS WASTE CANISTER SYSTEMS AND METHODSJuly 2023October 2025Allow2700NoNo
18347918METHOD FOR CROSS-SECTION SAMPLE PREPARATIONJuly 2023January 2024Allow700NoNo
18218932PROCESSING ION PEAK AREAS IN MASS SPECTROMETRYJuly 2023November 2025Allow2900NoNo
18259015MASS AND/OR ION MOBILITY SPECTROMETRYJune 2023February 2026Allow3200NoNo
18267502Charged Particle Beam DeviceJune 2023October 2025Allow2800NoNo
18333174METHOD FOR OPTIMIZING A PARAMETER SETTING OF AT LEAST ONE MASS SPECTROMETRY DEVICEJune 2023October 2025Allow2800NoNo
18208598Charged Particle Beam Device and Image Acquisition MethodJune 2023August 2025Allow2600NoNo
18207644AUTOFOCUS METHOD FOR SINGLE BEAM AND MULTI-BEAM SYSTEMSJune 2023January 2026Allow3210NoNo
18037383SAMPLE SUPPORT BODY, IONIZATION METHOD, AND MASS SPECTROMETRY METHODMay 2023July 2025Allow2600NoNo
18196548SEMICONDUCTOR WAFERMay 2023November 2023Allow700NoNo
18313241PARALLEL PROCESSING AND HORIZONTAL SCALING FOR PEAK DETECTIONMay 2023November 2025Allow3000NoNo
18312991RADIATION SOURCE APPARATUS AND METHOD FOR USING THE SAMEMay 2023November 2023Allow700NoNo
18035589Charged Particle Beam Apparatus and Report Creation MethodMay 2023November 2025Allow3000NoNo
18035331ELECTROSTATIC ION TRAPMay 2023August 2024Allow1500NoNo
18312579EXTREME ULTRAVIOLET (EUV) RADIATION SOURCE APPARATUS, EUV LITHOGRAPHY SYSTEM, AND METHOD FOR GENERATING EXTREME ULTRAVIOLET RADIATIONMay 2023August 2025Allow2700NoNo
18141327DEBRIS MITIGATION DEVICE AND LIGHT SOURCE APPARATUS INCLUDING THE SAMEApril 2023July 2025Allow2600NoNo
18140771CYCLOIDAL MASS SPECTROMETER AND METHOD FOR ADJUSTING RESOLUTION THEREOFApril 2023August 2025Allow2700NoNo
18034322Pattern Measurement DeviceApril 2023July 2025Allow2700NoNo
18033324CHARACTERIZING AND MEASURING IN SMALL BOXES USING XPS WITH MULTIPLE MEASUREMENTSApril 2023August 2023Allow400NoNo
18250109PRECISION OPTICAL SPECTROSCOPY IN A MASS SPECTROMETERApril 2023February 2026Allow3401NoNo
18129533LIGHT SOURCE APPARATUSMarch 2023June 2025Allow2700NoNo
18128330Measurement System and Measurement MethodMarch 2023August 2025Allow2900NoNo
18128583VERIFICATION METHODS AND AGRONOMIC ENHANCEMENTS FOR CARBON REMOVAL BASED ON ENHANCED ROCK WEATHERINGMarch 2023October 2023Allow700NoNo
18028862SAMPLE HOLDER FOR DETECTION OF HYDROGEN PERMEATION AND HYDROGEN PERMEATION AND DIFFUSION PATH OBSERVATION DEVICEMarch 2023October 2025Allow3110NoNo
18029004Charged Particle Beam ApparatusMarch 2023June 2025Allow2700NoNo
18028931MASS SPECTROMETRY METHOD AND MASS SPECTROMETERMarch 2023January 2026Allow3410NoNo
18190168INSTRUMENT, INCLUDING AN ELECTROSTATIC LINEAR ION TRAP, FOR ANALYZING IONSMarch 2023December 2024Allow2100NoNo
18027024ANALYSIS DATA PROCESSING DEVICE, ANALYSIS DEVICE, ANALYSIS DATA PROCESSING METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING EXAMINATION PROGRAMMarch 2023June 2025Allow2700NoNo
18121550SYSTEM AND METHOD FOR THE ACOUSTIC LOADING OF AN ANALYTICAL INSTRUMENT USING A CONTINUOUS FLOW SAMPLING PROBEMarch 2023July 2024Allow1620NoNo
18120677ION CYCLOTRON RESONANCE SEPARATOR APPARATUS AND METHOD OF USE THEREOFMarch 2023August 2025Allow2900NoNo
18116076APPARATUS AND METHOD FOR AGRICULTURAL CONTAMINANT DETECTIONMarch 2023May 2023Allow300NoNo
18023692SAMPLE PREPARATION METHOD AND APPARATUSFebruary 2023September 2025Allow3100NoNo
18019485SINGLE ION DETECTION METHOD AND DEVICEFebruary 2023August 2023Allow700NoNo
18105083Apparatus for Ion Manipulation Having Curved Turn RegionsFebruary 2023February 2026Allow3610NoNo
18104508JOINT NANOSCALE THREE-DIMENSIONAL IMAGING AND CHEMICAL ANALYSISFebruary 2023February 2026Allow3710NoNo
18018926TIME-OF-FLIGHT MASS SPECTROMETER ASSEMBLY WITH A SECONDARY FLANGEJanuary 2023May 2023Allow300NoNo
18103238NON-DESTRUCTIVE CLASSIFICATION OF SPECIMENS BASED ON ENERGY SIGNATURE MEASUREMENTSJanuary 2023December 2025Allow3410NoNo
18101911ANTIMICROBIAL LIGHT-EMITTING PERCUTANEOUS SITE DRESSINGJanuary 2023May 2024Allow1510NoNo
18017904METHOD OF DETECTING RADICALS USING MASS SPECTROMETRYJanuary 2023May 2023Allow400NoNo
18099656RESIDUAL GAS ANALYSER, AND EUV LITHOGRAPHY SYSTEM HAVING A RESIDUAL GAS ANALYSERJanuary 2023January 2026Allow3610NoNo
18016162Charge Reduced Mass Spectrometry for Sequencing of Oligonucleotide TherapeuticsJanuary 2023May 2025Allow2800NoNo
18095860Ion accumulation control for analytical instrumentJanuary 2023May 2025Allow2800NoNo
18152684METHOD AND APPARATUS FOR IMPROVED ELECTROSPRAY EMITTER LIFETIMEJanuary 2023April 2023Allow300NoNo
18150314CURVED ION GUIDES AND RELATED SYSTEMS AND METHODSJanuary 2023May 2025Allow2900NoNo
18091994ROTATING TARGET FOR EXTREME ULTRAVIOLET SOURCE WITH LIQUID METALDecember 2022April 2024Allow1600NoNo
18147976EUV COLLECTORDecember 2022June 2025Allow6000NoNo
18146768INSTRUMENT FOR SEPARATING IONS INCLUDING AN ELECTROSTATIC LINEAR ION TRAP TO SIMULTANEOUSLY TRAP MULTIPLE IONSDecember 2022December 2024Allow2400NoNo
18076500CHARGED PARTICLE DETECTORDecember 2022June 2025Allow3000NoNo
18074824METHOD OF GENERATING A CRYSTALLINE ORIENTATION MAP OF A SURFACE PORTION OF A SAMPLE AND COMPUTER PROGRAM PRODUCTDecember 2022April 2025Allow2900NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner NGUYEN, KIET TUAN.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
1
Examiner Affirmed
0
(0.0%)
Examiner Reversed
1
(100.0%)
Reversal Percentile
95.9%
Higher than average

What This Means

With a 100.0% reversal rate, the PTAB has reversed the examiner's rejections more often than affirming them. 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
17
Allowed After Appeal Filing
12
(70.6%)
Not Allowed After Appeal Filing
5
(29.4%)
Filing Benefit Percentile
93.4%
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, 70.6% 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.

Examiner NGUYEN, KIET TUAN - Prosecution Strategy Guide

Executive Summary

Examiner NGUYEN, KIET TUAN works in Art Unit 2881 and has examined 2,155 patent applications in our dataset. With an allowance rate of 94.6%, this examiner allows applications at a higher rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 18 months.

Allowance Patterns

Examiner NGUYEN, KIET TUAN's allowance rate of 94.6% places them in the 83% percentile among all USPTO examiners. This examiner is more likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by NGUYEN, KIET TUAN receive 0.54 office actions before reaching final disposition. This places the examiner in the 3% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by NGUYEN, KIET TUAN is 18 months. This places the examiner in the 96% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a -6.8% benefit to allowance rate for applications examined by NGUYEN, KIET TUAN. This interview benefit is in the 4% percentile among all examiners. Note: Interviews show limited statistical benefit with this examiner compared to others, though they may still be valuable for clarifying issues.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 38.8% of applications are subsequently allowed. This success rate is in the 89% percentile among all examiners. Strategic Insight: RCEs are highly effective with this examiner compared to others. If you receive a final rejection, filing an RCE with substantive amendments or arguments has a strong likelihood of success.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 62.7% of cases where such amendments are filed. This entry rate is in the 88% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 88.9% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 67% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences show above-average effectiveness with this examiner. If you have strong arguments, a PAC request may result in favorable reconsideration.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 93.8% of appeals filed. This is in the 85% percentile among all examiners. Of these withdrawals, 80.0% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner frequently reconsiders rejections during the appeal process compared to other examiners. Per MPEP § 1207.01, all appeals must go through a mandatory appeal conference. Filing a Notice of Appeal may prompt favorable reconsideration even before you file an Appeal Brief.

Petition Practice

When applicants file petitions regarding this examiner's actions, 44.6% are granted (fully or in part). This grant rate is in the 38% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 8.9% of allowed cases (in the 92% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 4.7% of allowed cases (in the 79% percentile). Per MPEP § 714.14, a Quayle action indicates that all claims are allowable but formal matters remain. This examiner frequently uses Quayle actions compared to other examiners, which is a positive indicator that once substantive issues are resolved, allowance follows quickly.

Prosecution Strategy Recommendations

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

  • Consider after-final amendments: This examiner frequently enters after-final amendments. If you can clearly overcome rejections with claim amendments, file an after-final amendment before resorting to an RCE.
  • RCEs are effective: This examiner has a high allowance rate after RCE compared to others. If you receive a final rejection and have substantive amendments or arguments, an RCE is likely to be successful.
  • Appeal filing as negotiation tool: This examiner frequently reconsiders rejections during the appeal process. Filing a Notice of Appeal may prompt favorable reconsideration during the mandatory appeal conference.
  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

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.