USPTO Examiner CHOWDHURY IQBAL HOSSAIN - Art Unit 1656

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19095861COMPOSITIONS, KITS, AND METHODS FOR IN VITRO TRANSCRIPTIONMarch 2025October 2025Allow701YesNo
18879948NOVEL PHOSPHOENOLPYRUVATE CARBOXYLASE VARIANT AND METHOD FOR PRODUCING 5’-INOSINIC ACID USING SAMEDecember 2024June 2025Allow600YesNo
18879104MODIFIED MICROORGANISM OF GENUS CORYNEBACTERIUM PRODUCING L-GLUTAMIC ACID AND METHOD FOR PRODUCING L-GLUTAMIC ACID USING SAMEDecember 2024August 2025Allow801YesNo
18984347RECOMBINANT HUMANIZED TYPE III COLLAGEN MICROSPHERE WITH INNOVATIVE SPATIAL STRUCTURE, AND DESIGN, PREPARATION PROCESS AND USETHEREOFDecember 2024July 2025Allow711YesNo
18723639NOVEL PROMOTER VARIANT FOR CONSTITUTIVE EXPRESSION AND USES THEREOFJune 2024April 2025Allow1001YesNo
18721879ZAVARZINIA COMPRANSORIS CAPABLE OF DEGRADING ORGANOPHOSPHORUS FLAME RETARDANT AND USE THEREOFJune 2024June 2025Allow1200YesNo
18731571IMMOBILIZED ENZYMES FOR BIOELECTROCATALYSISJune 2024July 2025Allow1311YesNo
18648034PROCESSES AND SYSTEMS TO PRODUCE RENEWABLE ENERGY AND FIBER FROM CELLULOSE-RICH WASTE MATERIALSApril 2024April 2025Allow1111NoNo
18626782ENGINEERING STRAIN PRODUCING CORDYCEPIN AND ITS DERIVATIVE 3'-DEOXYINOSINE, ITS PREPARATION METHOD AND APPLICATIONApril 2024March 2025Allow1111YesNo
18614748Construction Method and Applications of Glycosyltransferase BS-YjiC MutantMarch 2024September 2024Allow502YesNo
18613291GENETICALLY MODIFIED BACILLUS SUBTILIS STRAIN, OPTIMIZED VECTORS, AND USES THEREOFMarch 2024December 2025Allow2001YesNo
18612615METHODS AND COMPOSITIONS FOR THE ENZYMATIC PRODUCTION OF PSEUDOURIDINE TRIPHOSPHATEMarch 2024January 2025Allow1011YesNo
18433739METHOD FOR THE INCORPORATION OF FORMALDEHYDE INTO BIOMASSFebruary 2024March 2026Allow2511YesNo
18421303HETEROLOGOUS PRODUCTION OF LEUPEPTIN IN PROTEASE INHIBITORS AND ANALOGS THEREOFJanuary 2024October 2025Abandon2101NoNo
18392655ACETYL-COA PRODUCING ENZYMES IN YEASTDecember 2023January 2026Allow2511YesNo
18392370LIPASE VARIANTS AND COMPOSITIONS COMPRISING SURFACTANT AND LIPASE VARIANTDecember 2023December 2025Allow2411YesNo
18525555FUSION PROTEINS FOR BASE EDITINGNovember 2023July 2025Abandon1901NoNo
18506836METHODS AND COMPOSITIONS FOR PROMOTING NON-NATURAL AMINO ACID-CONTAINING PROTEIN PRODUCTIONNovember 2023November 2025Allow2411YesNo
18500785MODIFIED ARCHAEAL FAMILY B POLYMERASESNovember 2023September 2025Allow2211YesNo
18497736MICROORGANISM FOR PRODUCING HUMAN MILK OLIGOSACCHARIDEOctober 2023March 2026Allow2811YesNo
18492264GALACTOSE TO TAGATOSE ISOMERIZATION AT MODERATE TEMPERATURES WITH HIGH CONVERSION AND PRODUCTIVITYOctober 2023October 2025Allow2411YesNo
18482421POLYPEPTIDE MONOLITHSOctober 2023November 2025Abandon2511NoNo
18473416KERATINASE COMPOSITIONSeptember 2023July 2025Allow2111YesNo
18473809ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESSeptember 2023September 2025Abandon2411NoNo
18469527D-AMINO ACID OXIDASE MUTANTS AND USES THEREOF IN PREPARING L-GLUFOSINATESeptember 2023April 2024Allow701YesNo
18456663CAS9 VARIANTS AND METHODS OF USEAugust 2023August 2025Allow2411YesNo
18456894SECONDARY ACETATE FERMENTATIONAugust 2023May 2025Abandon2101NoNo
18454874METHOD FOR PRODUCING SEDOHEPTULOSEAugust 2023March 2025Allow1930YesNo
18225213ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESJuly 2023November 2025Abandon2711NoNo
18354262GADUSOL DERIVATIVE PRODUCTION IN BACTERIAJuly 2023April 2025Allow2101YesNo
18346715MICROORGANISMS AND METHODS FOR ENHANCING THE AVAILABILITY OF REDUCING EQUIVALENTS IN THE PRESENCE OF METHANOL, AND FOR PRODUCING 1,4-BUTANEDIOL RELATED THERETOJuly 2023February 2026Allow3221YesNo
18343633METHODS FOR CO-ACTIVATING IN VITRO NON-STANDARD AMINO ACID (nsAA) INCORPORATION AND GLYCOSYLATION IN CRUDE CELL LYSATESJune 2023January 2026Allow3111NoNo
18337172Lipase Variants and Polynucleotides Encoding SameJune 2023October 2025Allow2821YesNo
18206319METHODS AND COMPOSITIONS FOR THE ENZYMATIC PRODUCTION OF PSEUDOURIDINE TRIPHOSPHATEJune 2023February 2024Allow911YesNo
18298995NOVEL ENZYMES AND SYSTEMS FOR SYNTHESIZING DNAApril 2023February 2025Allow2201YesNo
18187984Strain Producing D-allulose 3-epimerase and Application thereofMarch 2023February 2024Allow1111YesNo
18180828MAMMALIAN CELL CULTUREMarch 2023August 2023Allow510YesNo
18178505Random Heteropolymers Preserve Protein Function in Foreign EnvironmentsMarch 2023January 2025Allow2211YesNo
18160112Compositions Of Engineered Human Arginases And Methods For Treating CancerJanuary 2023February 2025Abandon2501NoNo
18155002HIGH-PURITY STEVIOL GLYCOSIDESJanuary 2023February 2026Allow3721NoNo
18096933ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESJanuary 2023March 2026Abandon3801NoNo
18152992STABILIZED CELLULASE VARIANTSJanuary 2023April 2025Allow2711YesNo
18150496CARRIER PROTEIN SUBJECTED TO SITE-DIRECTED MUTATION AND USE THEREOF IN PREPARATION OF VACCINEJanuary 2023August 2025Allow3101YesNo
18149941ENGINEERED BIOCATALYSTS FOR THE SYNTHESIS OF GAMMA-HYDROXY AMINO ACIDSJanuary 2023December 2024Allow2301YesNo
18004043RENIN-BASED ANALYSIS OF HEPCIDINDecember 2022January 2026Abandon3601NoNo
18012573MHC MULTIMER EXPRESSION CONSTRUCTS AND USES THEREOFDecember 2022January 2026Abandon3701NoNo
18072710A METHOD FOR REDUCING ODOR IN REMEDIATION OF PESTICIDE CHEMICAL CONTAMINATED SOILDecember 2022January 2024Allow1411YesNo
18059581POLYPEPTIDE AND METHOD OF PRODUCING IMP USING THE SAMENovember 2022December 2024Allow2410YesNo
17998211METHOD FOR EFFICIENTLY PRODUCING L-HOMOPHENYLALANINE AND STRAIN PRODUCING L-HOMOPHENYLALANINENovember 2022September 2025Allow3501YesNo
18053198VLP FOR THE TREATMENT OF A LYSOSOMAL STORAGE DISEASENovember 2022December 2024Abandon2501NoNo
18053151FORMULATIONS COMPRISING RECOMBINANT ACID ALPHA-GLUCOSIDASENovember 2022September 2025Allow3421YesNo
18049758ENGINEERED KETOREDUCTASE POLYPEPTIDESOctober 2022March 2025Allow2911NoNo
17800484METHOD FOR THE INCORPORATION OF FORMALDEHYDE INTO BIOMASSOctober 2022November 2023Allow1511YesNo
17995360METHODS AND COMPOSITIONS FOR THE PRODUCTION OF XYLITOL FROM XYLOSE UTILIZING DYNAMIC METABOLIC CONTROLOctober 2022February 2026Allow4031YesNo
17936598USES AND METHODS FOR SULFATING A SUBSTRATE WITH A MUTATED ARYLSULFOTRANSFERASESeptember 2022May 2025Abandon3111NoNo
17934914DEGRADABLE CLOSTRIDIAL TOXINSSeptember 2022October 2024Abandon2501NoNo
17934848ANTHELMINTIC COMPOSITIONS AND METHODSSeptember 2022November 2025Allow3831YesNo
17931351Method For Selection Of High M6P Recombinant ProteinsSeptember 2022March 2026Allow4231YesNo
17930447GUIDE RNA COMBINATIONS AND METHODS OF USESeptember 2022August 2024Allow2301YesNo
17929074METHODS FOR TREATING OR PREVENTING TISSUE ADHESIONSSeptember 2022May 2025Abandon3211NoNo
17822823ENGINEERED KERATINASES DERIVED FROM BACILLUS CEREUS AND ENHANCED METHODS FOR BIODEGRADING FEATHERS AND OTHER KERATIN-CONTAINING MATERIALSAugust 2022September 2024Allow2512YesNo
17894932ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESAugust 2022June 2023Allow911YesNo
17894929ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESAugust 2022June 2023Allow911YesNo
17894933ENGINEERED ARYL SULFATE-DEPENDENT ENZYMESAugust 2022May 2023Allow911YesNo
17889397METHOD FOR PRODUCING L-THEANINE VIA FERMENTATION BY A GENETICALLY ENGINEERED BACTERIUM AND THE APPLICATION THEREOFAugust 2022April 2024Allow2000YesNo
17818919Mutant Aminoacyl tRNA SynthetaseAugust 2022July 2025Allow3511YesNo
17884269MICROBIAL APPROACH FOR THE PRODUCTION OF LONG CHAIN COMPOUNDSAugust 2022January 2025Allow3011YesNo
17880715Removing Polyphenol Contaminants from Feedstock-based PolyphenolsAugust 2022September 2024Abandon2501NoNo
17871025GLYCOSYL HYDROLASE ENZYMES IN HIGH TEMPERATURE INDUSTRIAL PROCESSESJuly 2022October 2024Allow2711YesNo
17813400Ribosome-Mediated Incorporation of Peptides and PeptidomimeticsJuly 2022December 2024Allow2911YesNo
17813240RECOMBINANT MICROORGANISMS AND USES THEREFORJuly 2022October 2024Allow2711YesNo
178126363-HYDROXYBUTYRYL-COA DEHYDROGENASE VARIANTS AND METHODS OF USEJuly 2022September 2024Allow2611YesNo
17811325LYSIN POLYPEPTIDES ACTIVE AGAINST GRAM-NEGATIVE BACTERIAJuly 2022December 2025Abandon4131YesNo
17850103STABLE PROTEASE VARIANTSJune 2022February 2026Allow4301YesNo
17833539POLYPEPTIDE AND METHOD OF PRODUCING IMP USING THE SAMEJune 2022April 2023Allow1011YesNo
17752338GENE PROMOTERS FOR USE IN PROKARYOTIC CELLSMay 2022May 2024Abandon2401NoNo
17751066VARIANT OF NITROUS OXIDE REDUCTASE PROTEIN AND METHOD OF REDUCING CONCENTRATION OF NITROUS OXIDE IN SAMPLEMay 2022June 2024Allow2511YesNo
17749252USE OF LYSIN TO RESTORE/AUGMENT ANTIBACTERIAL ACTIVITY IN THE PRESENCE OF PULMONARY SURFACTANT OF ANTIBIOTICS INHIBITED THEREBYMay 2022July 2024Allow2611YesNo
17661288Nucleic Acid Systems That Enable Bacteria to Specifically Target Solid Tumors via Glucose-Dependent ViabilityApril 2022April 2024Allow2411NoNo
17723284NON-RADIOACTIVE CYTOTOXICITY ASSAYSApril 2022September 2024Allow2911YesNo
17720027FLAVONOID AND ANTHOCYANIN BIOPRODUCTION USING MICROORGANISM HOSTSApril 2022September 2024Allow2921YesNo
17716253MODIFIED CASPASE-9 POLYPEPTIDES AND METHODS OF USE THEREOFApril 2022May 2024Allow2611YesNo
17704593Neurotransmitters and Methods of Making the SameMarch 2022January 2024Abandon2211NoNo
17704317VARIANT CAS12 PROTEINS WITH IMPROVED DNA CLEAVAGE SELECTIVITY AND METHODS OF USEMarch 2022August 2024Allow2902YesNo
17761215GENETICALLY ENGINEERED STRAIN WITH HIGH YIELD OF L-VALINE AND METHOD FOR PRODUCING L-VALINE BY FERMENTATIONMarch 2022July 2023Allow1611YesNo
17642592COMPOSITIONS AND METHODS RELATED TO FUNGAL HYPOXIA RESPONSIVE MORPHOLOGY FACTOR A (HRMA) AND BIOFILM ARCHITECTURE FACTOR (BAF) PROTEINSMarch 2022October 2023Allow1911YesNo
17641598METHODS AND COMPOSITIONS FOR CELL AND TISSUE REJUVENATIONMarch 2022February 2026Allow4711YesNo
17690886COMBINATION CHEMOTHERAPY FOR THE TREATMENT OF CANCERMarch 2022September 2024Allow3012YesNo
17641319BIOTIN SYNTHASES FOR EFFICIENT PRODUCTION OF BIOTINMarch 2022September 2025Abandon4301NoNo
17688024ANTI-AGING COMPOSITION AND USE THEREOF FOR PREVENTING AGINGMarch 2022February 2024Allow2311YesNo
17680766Neurotransmitters and Methods of Making the SameFebruary 2022November 2023Abandon2101NoNo
17678834Productivity and Bioproduct Formation in Phototropin Knock/Out Mutants in MicroalgaeFebruary 2022July 2024Allow2911YesNo
17637338METHOD FOR SAFELY PRODUCING BOTULINUM NEUROTOXINFebruary 2022August 2024Allow3010NoNo
17590560COMPOSITIONS AND METHODS FOR IN VIVO EXCISION OF HIV-1 PROVIRAL DNAFebruary 2022August 2025Abandon4301NoNo
17630987METHOD FOR ANTIBIOTIC SUSCEPTIBILITY TESTING OF BLOOD SAMPLESJanuary 2022February 2026Abandon4811NoNo
17586649METHOD FOR PRODUCING ANHYDROUS GALACTOSE DERIVED FROM SEAWEEDJanuary 2022March 2024Abandon2511NoNo
17630476MODIFIED FILAMENTOUS FUNGAL HOST CELLJanuary 2022September 2025Abandon4301NoNo
17584315MOLECULAR GLUE SCREENING ASSAYS AND METHODS FOR PRACTICING SAMEJanuary 2022June 2024Allow2911YesNo
17627233PROTEIN PRODUCTION METHOD AND CELL-FREE PROTEIN SYNTHESIS KITJanuary 2022December 2025Allow4711YesNo
17574742Tethering Cysteine Residues Using Cyclic DisulfidesJanuary 2022January 2024Allow2411NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner CHOWDHURY, IQBAL HOSSAIN.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
3
Examiner Affirmed
0
(0.0%)
Examiner Reversed
3
(100.0%)
Reversal Percentile
91.4%
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
34
Allowed After Appeal Filing
12
(35.3%)
Not Allowed After Appeal Filing
22
(64.7%)
Filing Benefit Percentile
57.9%
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, 35.3% 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.

Examiner CHOWDHURY, IQBAL HOSSAIN - Prosecution Strategy Guide

Executive Summary

Examiner CHOWDHURY, IQBAL HOSSAIN works in Art Unit 1656 and has examined 507 patent applications in our dataset. With an allowance rate of 83.8%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 31 months.

Allowance Patterns

Examiner CHOWDHURY, IQBAL HOSSAIN's allowance rate of 83.8% places them in the 58% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by CHOWDHURY, IQBAL HOSSAIN receive 1.65 office actions before reaching final disposition. This places the examiner in the 33% 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 CHOWDHURY, IQBAL HOSSAIN is 31 months. This places the examiner in the 54% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +41.4% benefit to allowance rate for applications examined by CHOWDHURY, IQBAL HOSSAIN. This interview benefit is in the 88% 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, 35.5% of applications are subsequently allowed. This success rate is in the 80% 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 43.4% of cases where such amendments are filed. This entry rate is in the 66% 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, 133.3% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 85% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences are highly effective with this examiner compared to others. Before filing a full appeal brief, strongly consider requesting a PAC. The PAC provides an opportunity for the examiner and supervisory personnel to reconsider the rejection before the case proceeds to the PTAB.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 88.9% of appeals filed. This is in the 82% percentile among all examiners. Of these withdrawals, 75.0% 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, 69.1% are granted (fully or in part). This grant rate is in the 76% 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 12.2% of allowed cases (in the 95% 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 0.5% of allowed cases (in the 55% 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:

  • 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.
  • 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.
  • Request pre-appeal conferences: PACs are highly effective with this examiner. Before filing a full appeal brief, request a PAC to potentially resolve issues without full PTAB review.
  • 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.