Prosecution Insights
Last updated: October 25, 2026

Hach Lange GmbH

Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics

7 pending office actions • 4 art units • 7 examiners • 0 of 7 (0%) have an AI response strategy ready • 6 patents granted in the last 365 days

Analysis

Hach Lange GmbH currently manages 7 pending office actions within the Chemistry & Materials technology area. These actions are distributed across 7 distinct examiners, meaning every pending matter is being reviewed by a different individual. This distribution requires the company to manage 7 unique examiner relationships simultaneously, which can lead to varied prosecution outcomes across the portfolio.

The portfolio spans 4 distinct art units, which is fewer than the 7 pending office actions. This ratio suggests that while the examiners are all different, some of the matters share technical classifications within the patent office. The busiest examiner is PEREZ-GUZMAN, CARLOS GABRIEL, who is responsible for 1 pending office action.

With 7 distinct examiners involved, there is no concentration of workload under any single individual, as the busiest examiner only handles 1 pending action. This represents a small fraction of the total 7 pending office actions. Practitioners should expect a variety of examination approaches across the 4 distinct art units involved in these filings, as no single unit or examiner dominates the current pending queue.

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

Portfolio Summary

7
Total Pending OAs
4
Non-Final OAs
3
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 3 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
1
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 3 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (2)Due ≤ 60 days (1)

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.

4
Hard (57%)
2
Medium (29%)
1
Easy (14%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other2 (29%)
§103 only2 (29%)
§112 only1 (14%)
Multi-statute (no §101)2 (29%)

Industry Mix

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

4
Life Sciences
57% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
3
Semiconductors
43% 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.

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
PEREZ-GUZMAN, CARLOS GABRIEL 1 82.2% +24.1%
FITZSIMMONS, ALLISON G 1 48.1% +16.0%
KASS, BENJAMIN JOSEPH 1 31.1% +64.4%
TRAN, JUDY DAO 1 80.0% +16.5%
FAYE, MAMADOU 1 78.5% +6.5%
MCGUIRK, JOHN SCHUYLER 1 77.8% +49.3%
GZYBOWSKI, MICHAEL STANLEY 1 67.6% +52.2%

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
18292709 CUVETTE FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, METHOD FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, SYSTEM FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE AND METHOD FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE TRAN, JUDY DAO 22d overdue

Hard Cases (4)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
18845649 PHOTOMETRIC PROCESS MEASUREMENT APPARATUS PEREZ-GUZMAN, CARLOS GABRIEL 43d
18708963 A METHOD FOR DETERMINING A SAMPLE FILTER CLOGGING CONDITION VALUE FITZSIMMONS, ALLISON G —
18699039 ANALYSIS PREPARATION CUVETTE RACK UNIT KASS, BENJAMIN JOSEPH —
18258999 METHOD FOR VERIFYING THE PLAUSIBILITY OF SENSOR INFORMATION IN A PLANT PROCESS MCGUIRK, JOHN SCHUYLER —

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
18292709 CUVETTE FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, METHOD FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, SYSTEM FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE AND METHOD FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE TRAN, JUDY DAO 22d overdue
18845649 PHOTOMETRIC PROCESS MEASUREMENT APPARATUS PEREZ-GUZMAN, CARLOS GABRIEL 43d
18708963 A METHOD FOR DETERMINING A SAMPLE FILTER CLOGGING CONDITION VALUE FITZSIMMONS, ALLISON G —
18699039 ANALYSIS PREPARATION CUVETTE RACK UNIT KASS, BENJAMIN JOSEPH —
18258999 METHOD FOR VERIFYING THE PLAUSIBILITY OF SENSOR INFORMATION IN A PLANT PROCESS MCGUIRK, JOHN SCHUYLER —
18250847 A PROCESS PHOTOMETER ARRANGEMENT GZYBOWSKI, MICHAEL STANLEY —

Top Art Units

Art UnitApps
1798 3
2877 2
1773 1
2884 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18845649 PHOTOMETRIC PROCESS MEASUREMENT APPARATUS PEREZ-GUZMAN, CARLOS GABRIEL 2877 §103§112 Final Rejection 43d Pending Sep 10, 2024
18708963 A METHOD FOR DETERMINING A SAMPLE FILTER CLOGGING CONDITION VALUE FITZSIMMONS, ALLISON G 1773 §101§103§112 Non-Final OA — Pending May 09, 2024
18699039 ANALYSIS PREPARATION CUVETTE RACK UNIT KASS, BENJAMIN JOSEPH 1798 §103§112 Non-Final OA — Pending Apr 05, 2024
18292709 CUVETTE FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, METHOD FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, SYSTEM FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE AND METHOD FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE TRAN, JUDY DAO 2877 §112 Non-Final OA 22d overdue Pending Jan 26, 2024
18258992 MULTI-WAVELENGTH PROCESS PHOTOMETER FAYE, MAMADOU 2884 §103 Final Rejection 1d overdue Pending Jun 22, 2023
18258999 METHOD FOR VERIFYING THE PLAUSIBILITY OF SENSOR INFORMATION IN A PLANT PROCESS MCGUIRK, JOHN SCHUYLER 1798 §101§102§103§112 Final Rejection — Pending Jun 22, 2023
18250847 A PROCESS PHOTOMETER ARRANGEMENT GZYBOWSKI, MICHAEL STANLEY 1798 §103 Non-Final OA — Pending Apr 27, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Hach Lange GmbH have?

Hach Lange GmbH has 7 pending office actions as of October 2026, spread across 4 art units and 7 examiners.

Which USPTO examiner handles the most Hach Lange GmbH applications?

Carlos Gabriel Perez-Guzman has the most, with 1 of Hach Lange GmbH's pending office actions.

What technology area are Hach Lange GmbH's patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

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