Prosecution Insights
Last updated: October 02, 2026

Wuxi Biologics Ireland Limited

Technology area: Biotechnology & Pharmaceuticals

10 pending office actions • 6 art units • 10 examiners • 0 of 10 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days

Analysis

Wuxi Biologics Ireland Limited currently has 10 pending office actions within the Biotechnology & Pharmaceuticals technology area. These 10 actions are being handled by 10 distinct examiners, resulting in a direct ratio of examiners to pending matters. The prosecution activity is distributed across 6 distinct art units, showing that the company's biological and pharmaceutical filings are reviewed by several different specialized groups within the patent office.

The busiest examiner is LEUNG, CHRISTINA Y, who is responsible for 1 pending office action. This matches the workload of every other examiner involved with the portfolio, as no individual manages more than a case. With 10 distinct examiners and 6 distinct art units, the company's filings are reviewed by a diverse group of officials, preventing any single examiner from having a disproportionate impact on the overall portfolio status. Practitioners should focus on the specific technical requirements of the 6 distinct art units, as these groups will likely have more influence on prosecution outcomes than the individual examiners. The busiest examiner is responsible for 1 pending office action.

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

Portfolio Summary

10
Total Pending OAs
8
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
0
Due this month
1
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.

2
Hard (20%)
4
Medium (40%)
4
Easy (40%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§102 only1 (10%)
§112 only4 (40%)
Double-patenting + other3 (30%)
Multi-statute (no §101)2 (20%)

Industry Mix

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

5
Life Sciences
50% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
5
Business / Other
50% 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.

100 h
Manual time on pending OAs
20 h
Time saved (low, 20%)
35 h
Time saved (mid, 35%)
0.9 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
LEUNG, CHRISTINA Y 1 77.4% +1.1%
ROONEY, NORA MAUREEN 1 60.3% +23.6%
SIEFKE, SAMUEL P 1 63.1% +17.8%
OUSPENSKI, ILIA I 1 77.5% +20.4%
GZYBOWSKI, MICHAEL STANLEY 1 68.3% +52.0%
BORGEEST, CHRISTINA M 1 55.6% +21.4%
LU, CHENG 1 54.1% +64.1%
HOWARD, ZACHARY C 1 64.0% +37.9%
VIJAYARAGHAVAN, JAGAMYA NMN 1 62.5% +49.3%
GUSTILO, ESTELLA M 1 53.6% +34.5%

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
19348335 RAMAN SPECTROSCOPY INTEGRATED PERFUSION CELL CULTURE SYSTEM FOR MONITORING AND AUTO-CONTROLLING PERFUSION CELLCULTURE LEUNG, CHRISTINA Y —
18292279 SYSTEM FOR EXPRESSION, PURIFICATION, AND DETECTION AND SCREENING OF BIOLOGICAL DRUGS GZYBOWSKI, MICHAEL STANLEY —

Interview Candidates (9)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
17572262 TRANSCRIPTIONAL REGULATORY ELEMENT AND ITS USE IN ENHANCING THE EXPRESSION OF HETEROLOGOUS PROTEIN VIJAYARAGHAVAN, JAGAMYA NMN 54d
18952889 NOVEL ANTI-PD-L1 ANTIBODIES ROONEY, NORA MAUREEN —
18702286 SYSTEMS FOR THE EXTRACTION OF MACROMOLECULES SIEFKE, SAMUEL P —
18692311 D3-BINDING MOLECULES AND USES THEREOF OUSPENSKI, ILIA I —
18292279 SYSTEM FOR EXPRESSION, PURIFICATION, AND DETECTION AND SCREENING OF BIOLOGICAL DRUGS GZYBOWSKI, MICHAEL STANLEY —
18272548 POLYPEPTIDE COMPLEXES WITH IMPROVED STABILITY AND EXPRESSION BORGEEST, CHRISTINA M —
18270160 MULTISPECIFIC ANTIGEN BINDING PROTEINS LU, CHENG —
18265338 AN ANTIBODY AGAINST P-CADHERIN AND USES THEREOF HOWARD, ZACHARY C —

Top Art Units

Art UnitApps
3991 1
1675 1
1642 1
1674 1
1633 1
1646 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19348335 RAMAN SPECTROSCOPY INTEGRATED PERFUSION CELL CULTURE SYSTEM FOR MONITORING AND AUTO-CONTROLLING PERFUSION CELLCULTURE LEUNG, CHRISTINA Y 3991 §103§112 Non-Final OA — Pending Oct 02, 2025
18952889 NOVEL ANTI-PD-L1 ANTIBODIES ROONEY, NORA MAUREEN — §112Other Non-Final OA — Pending Nov 19, 2024
18702286 SYSTEMS FOR THE EXTRACTION OF MACROMOLECULES SIEFKE, SAMUEL P — §102 Non-Final OA — Pending Apr 17, 2024
18692311 D3-BINDING MOLECULES AND USES THEREOF OUSPENSKI, ILIA I — §112 Non-Final OA — Pending Mar 14, 2024
18292279 SYSTEM FOR EXPRESSION, PURIFICATION, AND DETECTION AND SCREENING OF BIOLOGICAL DRUGS GZYBOWSKI, MICHAEL STANLEY — §102§103 Non-Final OA — Pending Jan 25, 2024
18272548 POLYPEPTIDE COMPLEXES WITH IMPROVED STABILITY AND EXPRESSION BORGEEST, CHRISTINA M 1675 §112DP Non-Final OA — Pending Jul 14, 2023
18270160 MULTISPECIFIC ANTIGEN BINDING PROTEINS LU, CHENG 1642 §102§103§112DP Non-Final OA — Pending Jun 28, 2023
18265338 AN ANTIBODY AGAINST P-CADHERIN AND USES THEREOF HOWARD, ZACHARY C 1674 §112Other Final Rejection — Pending Jun 05, 2023
17572262 TRANSCRIPTIONAL REGULATORY ELEMENT AND ITS USE IN ENHANCING THE EXPRESSION OF HETEROLOGOUS PROTEIN VIJAYARAGHAVAN, JAGAMYA NMN 1633 §112Other Final Rejection 54d Pending Jan 10, 2022
17425870 NOVEL BISPECIFIC CD3/CD20 POLYPEPTIDE COMPLEXES GUSTILO, ESTELLA M 1646 §112DP Non-Final OA — Pending Jul 26, 2021

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