Prosecution Insights
Last updated: October 25, 2026

Khaleda B Hasan, USPTO Patent Examiner

Listed by the USPTO as HASAN, KHALEDA B

Tech Center 1600 • Art Units: 1636 1646

This examiner grants 59% of resolved cases

Analysis

HASAN, KHALEDA B works in Tech Center 1600 and Art Unit 1636. The profile records 135 resolved cases, a 59.3% allowance rate, and a median of 1262 days to allowance. Allowance occurred in a modest majority of recorded cases, while the median indicates a lengthy prosecution path.

The interview lift is 49.0%, showing a strong positive association between interviews and allowance. The leading companies are Harbinger Health Inc., Intellia Therapeutics Inc., and Editas Medicine Inc. The listed firms are GOODWIN PROCTER LLP, McNeill PLLC, and Clark+Elbing LLP - Moderna. Counsel may give interviews substantial attention when developing a plan to address prosecution obstacles.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

59.3%
Allow Rate
-0.7% vs TC avg
163
Total Applications
+49.0%
Interview Lift
1262
Avg Prosecution Days
Based on 135 resolved cases, 2023–2026

Rejection Statute Breakdown

6.6%
§101 Eligibility
14.6%
§102 Novelty
33.5%
§103 Obviousness
26.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19630254 Compositions and Methods Comprising a TTR Guide RNA and a Polynucleotide Encoding an RNA-Guided DNA Binding Agent Non-Final OA Intellia Therapeutics, Inc.
17735929 Methods and Compositions for Directed Genome Editing Non-Final OA Intellia Therapeutics, Inc.
18104461 GENOME EDITING SYSTEMS COMPRISING REPAIR-MODULATING ENZYME MOLECULES AND METHODS OF THEIR USE Non-Final OA Editas Medicine, Inc.
18543930 MODIFIED POLYNUCLEOTIDES FOR THE PRODUCTION OF SECRETED PROTEINS Non-Final OA ModernaTX, Inc.
18519589 SOLID PHASE NEGATIVE ENRICHMENT Non-Final OA Harbinger Health, Inc.
18385649 BODILY FLUID TARGET ENRICHMENT Non-Final OA Harbinger Health, Inc.
18131634 SOLID PHASE NEGATIVE ENRICHMENT Non-Final OA Harbinger Health, Inc.
18121328 BODILY FLUID TARGET ENRICHMENT Non-Final OA Harbinger Health, Inc.
18057359 EXOSOMES COMPRISING THERAPEUTIC POLYPEPTIDES Non-Final OA Oxford University Innovation Limited
18516247 ENGINEERED MEGANUCLEASES THAT TARGET HUMAN MITOCHONDRIAL GENOMES Non-Final OA University of Miami
18015398 LIPID NANOPARTICLES FOR DELIVERING THERAPEUTICS TO LUNGS Non-Final OA GENEVANT SCIENCES GMBH
18612893 NUCLEIC ACID SENSOR AGONIST COMPOSITIONS AND USES THEREOF Non-Final OA HDT Bio Corp.
18006555 LIPID NANOPARTICLE COMPRISING MODIFIED NUCLEOTIDES Final Rejection STRAND THERAPEUTICS INC.
18418226 T7 DNA Ligase Variants Having Increased Ligation Efficiency Non-Final OA AbClonal Science, Inc.
17701325 COMPOSITIONS AND METHODS FOR MODULATING APOLIPOPROTEIN B (APOB) GENE EXPRESSION Final Rejection Sepia Therapeutics Inc.
18554417 DNA Binding Proteins for Regulating Gene Expression Non-Final OA Altius Institute for Biomedical Sciences
17930705 SYSTEMS AND METHODS FOR DETECTING TUMOR DNA IN MAMMALIAN BLOOD Non-Final OA Gene Solutions Joint Stock Company
16547019 METHODS FOR DELIVERING GENE EDITING REAGENTS TO CELLS WITHIN ORGANS Final Rejection BLUEALLELE, LLC

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Frequently Asked Questions

What is examiner Khaleda B Hasan's allowance rate?

59.3% of resolved applications examined by Khaleda B Hasan were allowed (135 resolved cases), compared with 37.1% across Art Unit 1636 over the last five years.

Does an interview help with examiner Khaleda B Hasan?

This examiner's interview lift is +49.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Khaleda B Hasan take to allow a patent?

Applications allowed by Khaleda B Hasan took 1,262 days on average from filing to allowance.

Which art unit does examiner Khaleda B Hasan work in?

Khaleda B Hasan examines applications in Art Unit 1636 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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