Examiner Chameli Das has allowed 796 of 883 decided applications in Computer Architecture, Software, and Information Security.
Examiner Chameli Das maintains a public record in Technology Center 2100 (Computer Architecture, Software, and Information Security), spanning four art units. Across hundreds of decided applications in this examiner's pooled record, the allowance rate is 90%. This rate represents the share of applications that were allowed among all decided applications (allowed and abandoned combined). The allowance rate varies across the art units in which this examiner works, ranging from 74% to 94%. This pooled figure aggregates outcomes across all four art units and reflects historical disposition data only.
A pooled examiner record aggregates allowance rates across multiple art units into a single overall figure. This aggregate describes what occurred in past applications and is not predictive of any specific pending application. The range reflects variation among the art units themselves; individual cases may fall anywhere within or outside this spread depending on claim scope, prior art, and other prosecution factors specific to each matter. Pooled data is historical context, not a forecast.
These are aggregate statistics from this examiner's past public record — not predictions about any specific application. The per-art-unit figures below show how the record varies across art units. Our approach to patent prosecution →
Each section benchmarks this examiner against that art unit's average. Figures are this examiner's own public record within the art unit; the overall rate above pools them.
Primarily examines program control and execution, and software engineering.
Grounds can co-occur, so the four don't sum to 100%. The art-unit figure is the unweighted mean across examiners in the art unit; §102 and §112 carry no art-unit benchmark.
Allowance rate for applications with an examiner interview versus without one.
A correlation, not proof that interviews cause allowances. Based on 263 decided applications with an interview and 161 without.
Primarily examines program control and execution.
Grounds can co-occur, so the four don't sum to 100%. The art-unit figure is the unweighted mean across examiners in the art unit; §102 and §112 carry no art-unit benchmark.
Allowance rate for applications with an examiner interview versus without one.
A correlation, not proof that interviews cause allowances. Based on 227 decided applications with an interview and 47 without.
Primarily examines software engineering.
Allowance rate for applications with an examiner interview versus without one.
A correlation, not proof that interviews cause allowances. Based on 89 decided applications with an interview and 53 without.
Primarily examines neural-network / biological-model computing, and machine learning.
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Methodology. This page pools every art unit in which Examiner Chameli Das has a public record within Technology Center 2100. Statistics are computed from publicly available USPTO records, refreshed on a recurring schedule. This page's data was last updated July 14, 2026. The overall allowance rate is total allowed divided by total decided applications (allowed plus abandoned) across all art units — not an average of the per-art-unit rates; pending applications are excluded. Figures are rounded for display. Pooled sample: 883 applications.
Rejection rates. Each §-rate is the share of this examiner's applications that drew at least one office-action rejection in which that statutory ground appears; applications with no rejection on record are excluded, and because grounds can co-occur the four do not sum to 100%. The art-unit figure beside each is the unweighted mean of the per-examiner rates across the art unit, published for §101 and §103 only. Beside the overall allowance rate we show a benchmark: for a single-art-unit examiner it is exactly that art unit's average, labeled “art-unit average”; for an examiner spanning several art units it is the “weighted peer average” — the per-art-unit averages, weighted by this examiner's application count in each — labeled distinctly because it is a blended figure, not any single art unit's average. Both are built from the same per-art-unit averages the panels show.
Lynch LLP is not affiliated with, endorsed by, or sponsored by the United States Patent and Trademark Office. Examiner statistics are derived from publicly available USPTO data.
These statistics describe past examiner behavior and do not predict the outcome of any particular application. Past results do not guarantee future outcomes. Where this page compares an examiner's allowance rate to an art-unit average, that comparison is a factual description of the public record, not a characterization of any individual examiner's conduct or competence.
This page is for general informational purposes and is not legal advice. No attorney-client relationship is formed by viewing it. Full disclaimers →
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