Prosecution Insights
Last updated: October 25, 2026

Angel Yeast Co. Ltd.

Technology areas: Biotechnology & Pharmaceuticals • Chemistry & Materials

4 pending office actions • 4 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 1 patents granted in the last 365 days

Analysis

Angel Yeast Co. Ltd. has a distributed patent prosecution profile in the Biotechnology & Pharmaceuticals technology area. The company currently has 4 pending office actions, which are spread across 4 distinct art units. This indicates that the company's yeast-related biotechnology innovations are being evaluated by multiple specialized groups within the USPTO, reflecting a broad technical reach. The use of 4 distinct art units suggests that the portfolio's technical scope is diverse and covers multiple biotechnology sub-specialties.

The prosecution of these applications is handled by 4 distinct examiners, with each examiner managing a single active matter. ZINGARELLI, SANDRA is the busiest examiner, holding 1 busiest examiner pending office action. This decentralized structure means that the company must interact with 4 distinct examiners, each with their own examination style and technical focus. Managing 4 pending office actions in this manner requires a coordinated effort to ensure that the company's intellectual property strategy remains consistent across the portfolio.

Practitioners must tailor their responses to the specific requirements of 4 distinct examiners while navigating the nuances of four different technical groups. This distribution within the Biotechnology & Pharmaceuticals field provides the company with a broad exposure to USPTO examination practices. With 1 busiest examiner pending for ZINGARELLI, SANDRA, the workload is evenly spread across the assigned staff. This lack of concentration across the 4 distinct art units involved requires a multifaceted approach to the company's current patent prosecution cycle.

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

Portfolio Summary

4
Total Pending OAs
2
Non-Final OAs
2
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

0
Overdue
0
Due this week
1
Due this month
0
Due in next 60 days
0
Due later

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

3
Hard (75%)
1
Medium (25%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (25%)
§103 only1 (25%)
Multi-statute (no §101)2 (50%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

4
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ZINGARELLI, SANDRA 1 6.7% +46.4%
DURYEE, ALEXANDER MARSH 1 33.3% +41.7%
MORNHINWEG, JEFFREY P 1 36.7% +32.2%
KERSHAW, KELLY P 1 17.7% +16.0%

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18724522 Yeast Protein Having Antibacterial Function and Preparation Method Therefor ZINGARELLI, SANDRA —
18715537 HIGH-PROTEIN SACCHAROMYCES CEREVISIAE AND APPLICATION THEREOF DURYEE, ALEXANDER MARSH —
18682405 HIGH IMMUNE YEAST CELL WALL, AND PREPARATION METHOD THEREFOR AND USE THEREOF KERSHAW, KELLY P —

Interview Candidates (4)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
18690244 YEAST PROTEIN VEGETARIAN MEAT, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF MORNHINWEG, JEFFREY P 21d
18724522 Yeast Protein Having Antibacterial Function and Preparation Method Therefor ZINGARELLI, SANDRA —
18715537 HIGH-PROTEIN SACCHAROMYCES CEREVISIAE AND APPLICATION THEREOF DURYEE, ALEXANDER MARSH —
18682405 HIGH IMMUNE YEAST CELL WALL, AND PREPARATION METHOD THEREFOR AND USE THEREOF KERSHAW, KELLY P —

Top Art Units

Art UnitApps
1653 1
1657 1
1793 1
1791 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18724522 Yeast Protein Having Antibacterial Function and Preparation Method Therefor ZINGARELLI, SANDRA 1653 §103§112 Non-Final OA — Pending Jul 23, 2024
18715537 HIGH-PROTEIN SACCHAROMYCES CEREVISIAE AND APPLICATION THEREOF DURYEE, ALEXANDER MARSH 1657 §101§103§112 Final Rejection — Pending May 31, 2024
18690244 YEAST PROTEIN VEGETARIAN MEAT, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF MORNHINWEG, JEFFREY P 1793 §103 Final Rejection 21d Pending Mar 07, 2024
18682405 HIGH IMMUNE YEAST CELL WALL, AND PREPARATION METHOD THEREFOR AND USE THEREOF KERSHAW, KELLY P 1791 §103§112 Non-Final OA — Pending Feb 08, 2024

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Frequently Asked Questions

How many pending USPTO office actions does Angel Yeast Co. Ltd. have?

Angel Yeast Co. Ltd. has 4 pending office actions as of October 2026, spread across 4 art units and 4 examiners.

Which USPTO examiner handles the most Angel Yeast Co. Ltd. applications?

Sandra Zingarelli has the most, with 1 of Angel Yeast Co. Ltd.'s pending office actions.

What technology area are Angel Yeast Co. Ltd.'s patent applications in?

Mostly Biotechnology & Pharmaceuticals (USPTO Tech Center 1600), based on where its pending office actions are examined.

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