USPTO Examiner MAHATAN CHANNING S - Art Unit 1636

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
17139678NOVEL CRISPR DNA TARGETING ENZYMES AND SYSTEMSDecember 2020July 2021Allow711NoNo
16978903SYSTEMS AND METHODS FOR ASSESSING COLORECTAL CANCER MOLECULAR SUBTYPE AND RISK OF RECURRENCE AND FOR DETERMINING AND ADMINISTERING TREATMENT PROTOCOLS BASED THEREONDecember 2020August 2021Allow1111YesNo
17103812VECTORS & METHODSNovember 2020August 2022Abandon2121NoNo
17060534METHODS AND SYSTEMS FOR DETERMINING A PREGNANCY-RELATED STATE OF A SUBJECTOctober 2020October 2021Allow1231YesNo
16938136NUCLEIC ACID COMPRISING OR CODING FOR A HISTONE STEM-LOOP AND A POLY(A) SEQUENCE OR A POLYADENYLATION SIGNAL FOR INCREASING THE EXPRESSION OF AN ENCODED PATHOGENIC ANTIGENJuly 2020December 2020Allow511NoNo
16933540HTP PLATFORM FOR THE GENETIC ENGINEERING OF CHINESE HAMSTER OVARY CELLSJuly 2020February 2021Allow611YesNo
16769558Method for characterizing biological part based on dual-fluorescent reporter gene system and biological part library constructed thereonJune 2020October 2021Allow1711NoNo
16757003DELTA-LIKE LIGAND 1 FOR DIAGNOSING SEVERE INFECTIONSApril 2020August 2021Allow1611YesNo
16849441COMPOSITIONS AND METHODS FOR RAPID AND DYNAMIC FLUX CONTROL USING SYNTHETIC METABOLIC VALVESApril 2020June 2021Allow1401YesNo
16849455COMPOSITIONS AND METHODS FOR RAPID AND DYNAMIC FLUX CONTROL USING SYNTHETIC METABOLIC VALVESApril 2020June 2021Allow1401YesNo
16846133DIGITAL COUNTING OF INDIVIDUAL MOLECULES BY STOCHASTIC ATTACHMENT OF DIVERSE LABELSApril 2020April 2024Allow4810NoNo
16842719INTEGRATION OF NUCLEIC ACID CONSTRUCTS INTO EUKARYOTIC CELLS WITH A TRANSPOSASE FROM ORYZIASApril 2020April 2021Allow1211NoNo
16831675ENDOPHYTE COMPOSITIONS AND THE METHODS FOR IMPROVEMENT OF PLANT TRAITSMarch 2020March 2024Allow4810NoNo
16825710POOLED GENOME EDITING IN MICROBESMarch 2020February 2021Allow1111YesNo
16812138RNA-GUIDED DNA INTEGRATION USING TN7-LIKE TRANSPOSONSMarch 2020November 2020Allow810YesNo
16680104NOVEL CRISPR DNA TARGETING ENZYMES AND SYSTEMSNovember 2019July 2020Allow801YesNo
16541354APPLICATIONS OF CRISPRi IN HIGH THROUGHPUT METABOLIC ENGINEERINGAugust 2019June 2021Allow2221YesYes
16460455LIQUID BASED SELECTION AND CELL ISOLATIONJuly 2019April 2021Allow2111YesNo
16417523BIOLOGICAL DETECTION METHOD FOR DIOXINS IN SERUM, AND DIAGNOSTIC USE THEREFOR IN METABOLIC SYNDROME AND RELATED CONDITIONSMay 2019February 2020Allow910NoNo
16347723A TWO-PART DEVICE FOR T-CELL RECEPTOR SYNTHESIS AND STABLE GENOMIC INTEGRATION TO TCR-PRESENTING CELLSMay 2019July 2021Allow2611YesNo
16369565METHODS AND COMPOSITIONS FOR MODIFYING A TARGETED LOCUSMarch 2019April 2024Allow6010NoNo
16362897RECOMBINANT MICROORGANISMS CAPABLE OF CARBON FIXATIONMarch 2019April 2024Allow6010NoNo
16335515HIGH MOBILITY GROUP BOX I MUTANTMarch 2019April 2021Allow2511YesNo
16353248Algorithms for Disease DiagnosticsMarch 2019February 2020Allow1111YesNo
16256483METHOD FOR PREDICTING THE RESPONSE TO CHEMOTHERAPY IN A PATIENT SUFFERING FROM OR AT RISK OF DEVELOPING RECURRENT BREAST CANCERJanuary 2019September 2022Abandon4310NoNo
16229853ENGINEERED MICROBES FOR RARE EARTH ELEMENT ADSORPTIONDecember 2018September 2021Allow3321YesNo
16219553DIGITAL COUNTING OF INDIVIDUAL MOLECULES BY STOCHASTIC ATTACHMENT OF DIVERSE LABELSDecember 2018March 2019Allow310NoNo
16092414A METHOD OF ENGINEERING PRODRUG-SPECIFIC HYPERSENSITIVE T-CELLS FOR IMMUNOTHERAPY BY GENE EXPRESSIONOctober 2018May 2022Abandon4301NoNo
16153052METHODS FOR SCREENING BACTERIA, ARCHAEA, ALGAE, AND YEAST USING CRISPR NUCLEIC ACIDSOctober 2018October 2021Allow3650YesNo
16091874COMPOSITIONS FOR ERADICATING FLAVIVIRUS INFECTIONS IN SUBJECTSOctober 2018April 2022Abandon4201NoNo
16079740SYNTHETIC TRANSLATION-SENSING RIBOSWITCHES AND USES THEREOFAugust 2018September 2019Allow1311NoNo
16073343KIT FOR CONSTRUCTING TRANSPOSON AND USE THEREOFJuly 2018January 2022Allow4111YesNo
16038832DIGITAL COUNTING OF INDIVIDUAL MOLECULES BY STOCHASTIC ATTACHMENT OF DIVERSE LABELSJuly 2018December 2018Allow510YesNo
16027478METHOD FOR PREPARING RECOMBINANT PROTEINS THROUGH REDUCTION OF rnpA GENE EXPRESSIONJuly 2018August 2022Abandon4921NoNo
15563345NOVEL GENE REGULATING VIRULENCE OF CRYPTOCOCCUS NEOFORMANS, AND USE THEREOFJune 2018August 2021Abandon4601NoNo
16000607BIOMARKERS OF ENDOGENOUS BIOLOGICAL TIMEJune 2018January 2022Allow4311YesNo
15989400Method for Producing Fibroin-Like ProteinMay 2018May 2021Allow3610YesNo
15977788Host Cells and Systems for Membrane Protein ExpressionMay 2018December 2021Allow4311NoNo
15968517METHOD TO ENHANCE IMMUNOGENICITY OF LIVE TYPHOID VACCINES AND CARRIERSMay 2018October 2021Allow4121NoNo
15746621A High-secretion Heat-resistant Yeast Genetically Engineered Strain and Application ThereofApril 2018October 2019Allow2111NoNo
15957672Transcriptional system and uses thereof for single cell detectionApril 2018September 2021Abandon4111NoNo
15953974MODULATION OF BLOOD BRAIN BARRIER PERMEABILITYApril 2018March 2021Abandon3501NoNo
15949581SPECIFIC AND HIGH AFFINITY BINDING PROTEINS COMPRISING MODIFIED SH3 DOMAINS OF FYN KINASEApril 2018January 2021Allow3310NoNo
15942681GLUCOSE SENSORS AND METHODS OF USE THEREOFApril 2018August 2019Allow1721NoNo
15765043METHOD FOR EXTRACTING 2',3'-CYCLIC NUCLEOSIDE MONOPHOSPHATESMarch 2018October 2020Allow3010YesNo
15940282RECOMBINANT PROTEIN EXPRESSION USING A HYBRID CHEF1 PROMOTERMarch 2018March 2021Abandon3610NoNo
15935761LABORATORY CENTRAL CONTROL UNIT METHOD AND SYSTEMMarch 2018February 2022Allow4621NoNo
15762730METHODS AND COMPOSITIONS FOR SEQUENCE SPECIFIC ANTIMICROBIALSMarch 2018December 2021Allow4531YesNo
15762551NOVEL EPISOMAL PLASMID VECTORSMarch 2018June 2021Allow3911NoNo
15761598OPTOGENETIC SYSTEM BASED ON BACTERIAL PHYTOCHROME CONTROLLABLE WITH NEAR INFRA-RED LIGHTMarch 2018February 2021Allow3511YesNo
15925301COMPOSITIONS AND METHODS FOR THE BIOSYNTHESIS OF 1,4-BUTANEDIOL AND ITS PRECURSORSMarch 2018April 2021Abandon3711NoNo
15922763GENES INVOLVED IN ASTAXANTHIN BIOSYNTHESISMarch 2018May 2021Allow3811YesNo
15916274NOVEL CRISPR RNA TARGETING ENZYMES AND SYSTEMS AND USES THEREOFMarch 2018July 2021Allow4021NoNo
15916271NOVEL CRISPR RNA TARGETING ENZYMES AND SYSTEMS AND USES THEREOFMarch 2018June 2019Allow1511YesNo
15914602Boranephosphonate Detection Probes and Methods For Producing and Using the SameMarch 2018July 2021Abandon4021NoNo
15757325YEAST STRAINS FOR THE EXPRESSION AND SECRETION OF HETEROLOGOUS PROTEINS AT HIGH TEMPERATURESMarch 2018January 2022Allow4621YesNo
15904069SCAFFOLD PROTEINS DERIVED FROM PLANT CYSTATINSFebruary 2018August 2020Allow3011NoNo
15754524YEAST ALLELES INVOLVED IN TOLERANCE TO HIGH ALCOHOL LEVELSFebruary 2018June 2021Allow4011NoNo
15754589NUCLEASE WITH ENHANCED EFFICIENCY OF GENOME EDITINGFebruary 2018January 2022Allow4731YesNo
15899051Novel Cell Line Screening MethodFebruary 2018July 2020Allow2911YesNo
15898513METHODS AND SYSTEMS FOR ANALYSIS OF ORGAN TRANSPLANTATIONFebruary 2018July 2020Allow2911NoNo
15892330NUCLEIC ACID COMPRISING OR CODING FOR A HISTONE STEM-LOOP AND A POLY(A) SEQUENCE OR A POLYADENYLATION SIGNAL FOR INCREASING THE EXPRESSION OF AN ENCODED PATHOGENIC ANTIGENFebruary 2018June 2020Allow2811YesNo
15892356NUCLEIC ACID COMPRISING OR CODING FOR A HISTONE STEM-LOOP AND A POLY(A) SEQUENCE OR A POLYADENYLATION SIGNAL FOR INCREASING THE EXPRESSION OF AN ENCODED PATHOGENIC ANTIGENFebruary 2018February 2020Allow2411NoNo
15888734CELL CO-CULTURE SYSTEMS AND USES THEREOFFebruary 2018November 2020Abandon3311NoNo
15750334Promoter VariantsFebruary 2018March 2020Allow2511YesNo
15749544GDF-15 as a Haematological Toxicity BiomarkerFebruary 2018October 2020Allow3311YesNo
15884543COMPOSITION FOR SOLUBILIZING TARGET PROTEIN AND USE THEREOFJanuary 2018May 2020Allow2811NoNo
15875871MOLECULAR SUBTYPING, PROGNOSIS, AND TREATMENT OF BLADDER CANCERJanuary 2018August 2021Allow4321NoNo
15745030BASE SEQUENCE FOR PROTEIN EXPRESSION AND METHOD FOR PRODUCING PROTEIN USING SAMEJanuary 2018February 2020Allow2511NoNo
15869683METHOD FOR PREDICTING THE OUTCOME OF COLON CANCER BY ANALYSING MIRNA EXPRESSIONJanuary 2018November 2019Abandon2201NoNo
15868136METHOD FOR RECONSTRUCTING ASPERGILLUS NIGER TO INCREASE CITRATE PRODUCTIONJanuary 2018December 2019Allow2311NoNo
15867836Method for increasing citric acid production by Aspergillus niger fermentationJanuary 2018January 2020Allow2411NoNo
15742525PHARMACEUTICAL COMPOSITION FOR INHIBITING RESISTANCE AGAINST ANTICANCER DRUGS OF PATIENT SUFFERING FROM OVARIAN CANCER COMPRISING NAG-1 INHIBITOR AS ACTIVE INGREDIENTJanuary 2018December 2021Allow4741YesNo
15738918MALTOSE DEPENDENT DEGRONS, MALTOSE-RESPONSIVE PROMOTERS, STABILIZATION CONSTRUCTS, AND THEIR USE IN PRODUCTION OF NON-CATABOLIC COMPOUNDSDecember 2017December 2020Allow3621YesYes
15851377METHODS FOR PROCESSING OR ANALYZING SAMPLE OF THYROID TISSUEDecember 2017September 2018Allow911YesNo
15738555MALTOSE DEPENDENT DEGRONS, MALTOSE-RESPONSIVE PROMOTERS, STABILIZATION CONSTRUCTS, AND THEIR USE IN PRODUCTION OF NON-CATABOLIC COMPOUNDSDecember 2017May 2020Allow2921NoNo
15846279HIGH EFFICIENCY GENE TRANSFER AND EXPRESSION IN MAMMALIAN CELLS BY A MULTIPLE TRANSFECTION PROCEDURE OF MAR SEQUENCESDecember 2017January 2020Allow2511NoNo
15737516RNA-GUIDED TRANSCRIPTIONAL REGULATION AND METHODS OF USING THE SAME FOR THE TREATMENT OF BACK PAINDecember 2017November 2020Allow3521NoNo
15844014METHODS OF CELL RENEWALDecember 2017October 2021Allow4631NoNo
15840958NONLINEAR OPTICAL DETECTION OF MOLECULES COMPRISING AN UNNATURAL AMINO ACID POSSESSING A HYPERPOLARIZABILITYDecember 2017August 2019Abandon2001NoNo
15579841AMINO ACID-MODIFIED NUCLEIC ACID AND UTILIZATION THEREOFDecember 2017May 2020Allow2921YesNo
15829844ENDOPHYTE COMPOSITIONS AND THE METHODS FOR IMPROVEMENT OF PLANT TRAITSDecember 2017December 2019Allow2511YesNo
15827044METHODS FOR DIAGNOSING AUTISM SPECTRUM DISORDERSNovember 2017January 2020Allow2511NoNo
15826671METHODS AND MATERIALS FOR CLONING FUNCTIONAL T CELL RECEPTORS FROM SINGLE T CELLSNovember 2017November 2020Allow3531YesNo
15811841MODIFIED BINDING PROTEINS INHIBITING THE VEGF-A RECEPTOR INTERACTIONNovember 2017January 2020Allow2611NoNo
15799699METHOD FOR PREDICTING THE BENEFIT FROM INCLUSION OF TAXANE IN A CHEMOTHERAPY REGIMEN IN PATIENTS WITH BREAST CANCEROctober 2017January 2019Allow1410NoNo
15568098METHOD, LYSIS SOLUTION AND KIT FOR SELECTIVELY DEPLETING ANIMAL NUCLEIC ACIDS IN A SAMPLEOctober 2017January 2020Allow2711YesNo
15567312VECTOR-BASED MUTAGENESIS SYSTEMOctober 2017October 2021Allow4821YesNo
15784224HUMAN TYPE 55 REPLICATION DEFECTIVE ADENOVIRUS VECTOR, METHOD FOR PREPARING SAME AND USES THEREOFOctober 2017May 2020Allow3121YesNo
15725991DE NOVO ENGINEERING OF SITE-SPECIFIC MOLECULES BY TETHERINGOctober 2017March 2020Allow2911NoNo
15720658METHODS AND COMPOSITIONS FOR TRANSLATIONAL PROFILING AND MOLECULAR PHENOTYPINGSeptember 2017December 2020Allow3931YesNo
15561502SENSORS FOR DETECTION AND QUANTIFICATION OF MICROBIOLOGICAL PROTEIN SECRETIONSeptember 2017October 2021Allow4921YesNo
15706353SYNTHETIC GENE CLUSTERSSeptember 2017August 2019Allow2311NoNo
15702217METHODS AND COMPOSITIONS FOR CLASSIFICATION OF SAMPLESSeptember 2017June 2019Allow2110NoNo
15702126Algorithms for Disease DiagnosticsSeptember 2017June 2020Allow3320YesNo
15329491DISCOVERING AND PRODUCING CONDITIONALLY ACTIVE BIOLOGIC PROTEINS IN THE SAME EUKARYOTIC CELL PRODUCTION HOSTSAugust 2017August 2019Allow3011NoNo
15553552PEPTIDES AND USES THEREOFAugust 2017April 2020Allow3121YesNo
15677164PROTEIN EXPRESSION STRAINSAugust 2017May 2018Allow910YesNo
15672789COMPOSITIONS AND METHODS RELATING TO GENOMIC MODIFICATIONS IN AVIAN PRIMORDIAL GERM CELLSAugust 2017October 2019Allow2611NoNo
15664792PROTEIN EXPRESSION ENHANCER SEQUENCES AND USE THEREOFJuly 2017August 2019Allow2411NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner MAHATAN, CHANNING S.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
3
Examiner Affirmed
2
(66.7%)
Examiner Reversed
1
(33.3%)
Reversal Percentile
50.1%
Higher than average

What This Means

With a 33.3% 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
33
Allowed After Appeal Filing
8
(24.2%)
Not Allowed After Appeal Filing
25
(75.8%)
Filing Benefit Percentile
34.0%
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, 24.2% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is below the USPTO average, suggesting that filing an appeal has limited effectiveness in prompting favorable 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 shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner MAHATAN, CHANNING S - Prosecution Strategy Guide

Executive Summary

Examiner MAHATAN, CHANNING S works in Art Unit 1636 and has examined 480 patent applications in our dataset. With an allowance rate of 59.6%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 35 months.

Allowance Patterns

Examiner MAHATAN, CHANNING S's allowance rate of 59.6% places them in the 21% 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 MAHATAN, CHANNING S receive 2.04 office actions before reaching final disposition. This places the examiner in the 49% percentile for office actions issued. This examiner issues fewer office actions than average, which may indicate efficient prosecution or a more lenient examination style.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by MAHATAN, CHANNING S is 35 months. This places the examiner in the 38% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +48.1% benefit to allowance rate for applications examined by MAHATAN, CHANNING S. 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, 26.1% of applications are subsequently allowed. This success rate is in the 45% percentile among all examiners. Strategic Insight: RCEs show below-average effectiveness with this examiner. Carefully evaluate whether an RCE or continuation is the better strategy.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 40.4% of cases where such amendments are filed. This entry rate is in the 63% percentile among all examiners. Strategic Recommendation: This examiner shows above-average receptiveness to after-final amendments. If your amendments clearly overcome the rejections and do not raise new issues, consider filing after-final amendments before resorting to an RCE.

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 1% 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 85.7% of appeals filed. This is in the 79% percentile among all examiners. Of these withdrawals, 55.6% 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, 58.2% are granted (fully or in part). This grant rate is in the 59% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.4% of allowed cases (in the 57% percentile). This examiner makes examiner's amendments more often than average to place applications in condition for allowance (MPEP § 1302.04).

Quayle Actions: This examiner issues Ex Parte Quayle actions in 3.5% of allowed cases (in the 78% 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:

  • 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.
  • 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.
  • 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.

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.