Prosecution Insights
Last updated: October 04, 2026

Csl Behring Lengnau AG

Technology area: Biotechnology & Pharmaceuticals

3 pending office actions • 3 art units • 3 examiners • 1 of 3 (33%) have an AI response strategy ready

Analysis

Csl Behring Lengnau AG manages a company patent portfolio in the Biotechnology & Pharmaceuticals technology area. The data shows 2 pending office actions currently active. These actions are distributed among 2 distinct examiners, which indicates that each pending matter is being handled by a different individual at the patent office.

The prosecution activity is spread across 2 distinct art units, matching the 2 distinct examiners involved. YUNSOO KIM is identified as the busiest examiner for the portfolio, with 1 busiest examiner pending office action. Given that there are 2 pending office actions in total, the busiest examiner is responsible for 1 of the 2 pending office actions.

This distribution across 2 distinct art units suggests that the company's patent applications may cover different technical sub-fields within Biotechnology & Pharmaceuticals. Practitioners should be prepared to navigate 2 different examination environments, as each of the 2 distinct examiners will bring their own perspective to the 2 pending office actions. The presence of YUNSOO KIM as a primary contact for 1 of these actions provides a specific point of focus for the company's legal strategy.

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

Portfolio Summary

3
Total Pending OAs
1
Non-Final OAs
1
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 2 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

2
Overdue
0
Due this week
0
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.

1
Hard (33%)
2
Medium (67%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only2 (67%)
Multi-statute (no §101)1 (33%)

Industry Mix

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

3
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.

30 h
Manual time on pending OAs
6 h
Time saved (low, 20%)
10 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KIM, YUNSOO 1 65.9% +34.3%
MULDER, SCOTT EVAN 1 41.2% +65.2%
ZINGARELLI, SANDRA 1 6.9% +46.3%

Hard Cases (1)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
17623398 A TRUNCATED VON WILLEBRAND FACTOR (VWF) FOR INCREASING THE IN VITRO STABILITY OF COAGULATION FACTOR VIII ZINGARELLI, SANDRA 23d overdue

Interview Candidates (3)

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 3 ordered by deadline are shown.

App #TitleExaminerDue in
17775704 POLYPEPTIDES FOR INDUCING TOLERANCE TO FACTOR VIII MULDER, SCOTT EVAN 113d overdue
17623398 A TRUNCATED VON WILLEBRAND FACTOR (VWF) FOR INCREASING THE IN VITRO STABILITY OF COAGULATION FACTOR VIII ZINGARELLI, SANDRA 23d overdue
17782404 STABLE COMPOSITIONS OF FC MULTIMERS KIM, YUNSOO —

Top Art Units

Art UnitApps
1641 1
1656 1
1653 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
17782404 STABLE COMPOSITIONS OF FC MULTIMERS KIM, YUNSOO 1641 §103 Non-Final OA — Pending Jun 03, 2022
17775704 POLYPEPTIDES FOR INDUCING TOLERANCE TO FACTOR VIII MULDER, SCOTT EVAN 1656 §103 Non-Final OA 113d overdue AI Ready May 10, 2022
17623398 A TRUNCATED VON WILLEBRAND FACTOR (VWF) FOR INCREASING THE IN VITRO STABILITY OF COAGULATION FACTOR VIII ZINGARELLI, SANDRA 1653 §102§103§112 Final Rejection 23d overdue Pending Dec 28, 2021

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