Prosecution Insights
Last updated: October 02, 2026
Application No. 16/972,873

Modified Nucleobases with Uniform H-Bonding Interactions, Homo- and Hetero-Basepair Bias, and Mismatch Discrimination

Final Rejection
Filed
Dec 07, 2020
Priority
Jun 08, 2018 — provisional 62/763,299 +2 more
Examiner
LEE, ANDREW P
Art Unit
1691
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Carnegie Mellon University
OA Round
2 (Final)
48%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
71%
With Interview

Examiner Intelligence

Grants 48% of resolved cases
48%
Career Allowance Rate
287 granted / 594 resolved
-11.7% vs TC avg
Strong +23% interview lift
Without
With
+23.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
43 currently pending
Career history
645
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
57.0%
+17.0% vs TC avg
§102
7.7%
-32.3% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 594 resolved cases

Prosecution Timeline

Dec 07, 2020
Application Filed
Aug 28, 2025
Non-Final Rejection mailed
Sep 18, 2025
Interview Requested
Oct 01, 2025
Applicant Interview (Telephonic)
Oct 03, 2025
Examiner Interview Summary
Feb 27, 2026
Response Filed
Jun 09, 2026
Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12746219
METHODS AND COMPOSITIONS FOR PREVENTING SKIN TOXICITIES CAUSED BY BIOLOGICAL TARGETED CANCER DRUGS
4y 7m to grant Granted Sep 29, 2026
Patent 12721857
BORATE COMPLEXES OF CHLOROGENIC ACID AND USES THEREOF
2y 4m to grant Granted Sep 01, 2026
Patent 12692231
TRYPTAMINE DERIVATIVES
1y 9m to grant Granted Jul 28, 2026
Patent 12685731
ORGANIC COMPOUNDS
5y 10m to grant Granted Jul 21, 2026
Patent 12655142
4-(IMIDAZO[1,2-A]PYRIDIN-3-YL)-PYRIMIDINE DERIVATIVES
4y 4m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
48%
Grant Probability
71%
With Interview (+23.1%)
3y 3m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 594 resolved cases by this examiner. Grant probability derived from career allowance rate.

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