Last updated: October 02, 2026

Application No. 18/558,830

Compositions and Methods for Detecting Hepatitis Delta Virus by a Dual-Target Assay

Non-Final OA

Filed

Nov 03, 2023

Priority

May 06, 2021 — provisional 63/185,176 +1 more

Examiner

CHEN, STACY BROWN

Art Unit

1672

Tech Center

1600 — Biotechnology & Organic Chemistry

Assignee

Roche Molecular Systems Inc.

OA Round

1 (Non-Final)

Interview Optional

— +40.6% interview lift. Examiner has a relatively high allowance rate (66%); +40.6% interview lift. A written response may suffice.

Based on 940 resolved cases, 2023–2026

Examiner Intelligence

CHEN, STACY BROWN View full profile →

Grants 66% — above average

Career Allowance Rate

621 granted / 940 resolved

+6.1% vs TC avg

Strong +41% interview lift

Without

With

+40.6%

Interview Lift

resolved cases with interview

Typical timeline

3y 1m

Avg Prosecution

58 currently pending

Career history

986

Total Applications

across all art units

Statute-Specific Performance

§101

5.8%

-34.2% vs TC avg

§103

30.3%

-9.7% vs TC avg

§102

14.2%

-25.8% vs TC avg

§112

32.3%

-7.7% vs TC avg

Black line = Tech Center average estimate • Based on career data from 940 resolved cases

Prosecution Timeline

Nov 03, 2023

Application Filed

Sep 17, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/265,974

Patent 12699093

BIOSENSOR AND METHOD FOR DETERMINATION OF VIRUSES IN CORONAVIRUS FAMILY

3y 1m to grant Granted Aug 04, 2026

17/291,984

Patent 12653883

ALPHAVIRUS NEOANTIGEN VECTORS AND INTERFERON INHIBITORS

5y 1m to grant Granted Jun 16, 2026

17/775,094

Patent 12642846

ZIKA/DENGUE VACCINE AND APPLICATION THEREOF

4y 0m to grant Granted Jun 02, 2026

17/784,605

Patent 12636360

MUMPS AND MEASLES VIRUS IMMUNOGENS AND THEIR USE

3y 11m to grant Granted May 26, 2026

18/052,402

Patent 12622958

Virus-like particles containing RSV antigen protein and vaccines using the same

3y 6m to grant Granted May 12, 2026

Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.

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Prosecution Projections

1-2

Expected OA Rounds

66%

Grant Probability

99%

With Interview (+40.6%)

3y 1m (~2m remaining)

Median Time to Grant

Low

PTA Risk

Based on 940 resolved cases by this examiner. Grant probability derived from career allowance rate.