Prosecution Insights
Last updated: October 04, 2026

HYDAC Technology GmbH

Technology area: Medical Devices & Mechanical Engineering

7 pending office actions • 3 art units • 6 examiners • 0 of 7 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days

Analysis

HYDAC Technology GmbH has 6 pending office actions within the Medical Devices & Mechanical Engineering technology area. These matters are distributed among 5 distinct examiners and 3 distinct art units. This structure suggests a focused prosecution effort where a small group of examiners is responsible for evaluating the company's mechanical and medical innovations.

The busiest examiner identified in the portfolio is LESLIE, MICHAEL S, who is managing 2 pending office actions. Since there are 6 pending office actions in total, this examiner handles 2 of the active matters. The involvement of 5 distinct examiners across 3 distinct art units indicates that the company's applications are being processed within a narrow range of the patent office's organizational structure.

Practitioners should observe that the 3 distinct art units represent the primary technical environments for these 6 pending office actions. Navigating these specific units effectively is crucial for the company's overall patent strategy in the Medical Devices & Mechanical Engineering field. The 6 pending office actions provide a substantial basis for analyzing the company's current interactions with the patent office.

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

Portfolio Summary

7
Total Pending OAs
5
Non-Final OAs
1
Final Rejections
1
Advisory / Quayle

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.

5
Hard (71%)
1
Medium (14%)
1
Easy (14%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (14%)
§112 only1 (14%)
Multi-statute (no §101)5 (71%)

Industry Mix

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

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
4
Mechanical / Eng
57% of docket
3
Business / Other
43% 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.

70 h
Manual time on pending OAs
14 h
Time saved (low, 20%)
24 h
Time saved (mid, 35%)
0.6 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
LESLIE, MICHAEL S 2 81.2% +14.5%
LEARY, JOSHUA DENNIS 1 100.0% +0.0%
PLAKKOOTTAM, DOMINICK L 1 74.4% +14.9%
LU, HAOTIAN 1 60.6% +37.3%
ZOLLINGER, NATHAN C 1 69.6% +40.2%
DURDEN, RICHARD KYLE 1 60.8% +28.9%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18849696 Piston Accumulator LESLIE, MICHAEL S —

Hard Cases (5)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 5 ordered by deadline are shown.

App #TitleExaminerDue in
19110504 Method LESLIE, MICHAEL S —
18853300 Expansion Device LEARY, JOSHUA DENNIS —
18727455 Hydraulic Accumulator PLAKKOOTTAM, DOMINICK L —
18699995 Bellows Accumulator LU, HAOTIAN —
18022354 PISTON ACCUMULATOR DURDEN, RICHARD KYLE —

Interview Candidates (6)

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 6 ordered by deadline are shown.

App #TitleExaminerDue in
19110504 Method LESLIE, MICHAEL S —
18849696 Piston Accumulator LESLIE, MICHAEL S —
18727455 Hydraulic Accumulator PLAKKOOTTAM, DOMINICK L —
18699995 Bellows Accumulator LU, HAOTIAN —
18571424 Hydraulic Accumulator ZOLLINGER, NATHAN C —
18022354 PISTON ACCUMULATOR DURDEN, RICHARD KYLE —

Top Art Units

Art UnitApps
3753 2
3745 1
3746 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19110504 Method LESLIE, MICHAEL S 3745 §102§112 Non-Final OA — Pending Mar 11, 2025
18853300 Expansion Device LEARY, JOSHUA DENNIS — §102§103 Non-Final OA — Pending Oct 01, 2024
18849696 Piston Accumulator LESLIE, MICHAEL S — §112 Non-Final OA — Pending Sep 23, 2024
18727455 Hydraulic Accumulator PLAKKOOTTAM, DOMINICK L — §102§103§112 Non-Final OA — Pending Jul 09, 2024
18699995 Bellows Accumulator LU, HAOTIAN 3753 §102§103§112 Non-Final OA — Pending Apr 10, 2024
18571424 Hydraulic Accumulator ZOLLINGER, NATHAN C 3746 §103 Final Rejection — Pending Dec 18, 2023
18022354 PISTON ACCUMULATOR DURDEN, RICHARD KYLE 3753 §103§112 Non-Final OA — Pending Feb 21, 2023

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