Prosecution Insights
Last updated: October 25, 2026

Collagen Matrix Inc.

Technology areas: Biotechnology & Pharmaceuticals • Medical Devices & Mechanical Engineering

5 pending office actions • 4 art units • 4 examiners • 0 of 5 (0%) have an AI response strategy ready • 3 patents granted in the last 365 days

Analysis

Collagen Matrix Inc. has 5 pending office actions in Biotechnology & Pharmaceuticals. The matters involve 4 distinct examiners and 4 distinct art units, showing a distributed docket with one additional matter beyond the examiner and art-unit counts.

PARK, HAEJIN S is the busiest examiner, with 2 pending matters. That allocation provides one point for coordinated examiner-specific review, while the other assignments require separate technical and procedural tracking.

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

Portfolio Summary

5
Total Pending OAs
3
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.

1
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.

2
Hard (40%)
3
Medium (60%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
Double-patenting + other3 (60%)
Multi-statute (no §101)2 (40%)

Industry Mix

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

4
Life Sciences
80% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
20% 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.

50 h
Manual time on pending OAs
10 h
Time saved (low, 20%)
18 h
Time saved (mid, 35%)
0.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
PARK, HAEJIN S 2 55.1% +38.3%
LONG, SARAH A 1 60.7% +42.4%
IANNUZO, NATALIE NMN 1 12.2% +71.4%
LIEB, JEANETTE M 1 79.8% +17.4%

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
18776892 COMPRESSION AND KINK RESISTANT IMPLANTS LONG, SARAH A 15d overdue
18025963 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME IANNUZO, NATALIE NMN 12d
18091782 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME LIEB, JEANETTE M —

Interview Candidates (5)

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 5 ordered by deadline are shown.

App #TitleExaminerDue in
18776892 COMPRESSION AND KINK RESISTANT IMPLANTS LONG, SARAH A 15d overdue
18025963 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME IANNUZO, NATALIE NMN 12d
18091782 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME LIEB, JEANETTE M —
17472897 BONE GRAFT SUBSTITUTE PARK, HAEJIN S —
17234365 BONE GRAFT SUBSTITUTE PARK, HAEJIN S —

Top Art Units

Art UnitApps
1614 2
3771 1
1653 1
1654 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18776892 COMPRESSION AND KINK RESISTANT IMPLANTS LONG, SARAH A 3771 §103§112 Non-Final OA 15d overdue Pending Jul 18, 2024
18025963 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME IANNUZO, NATALIE NMN 1653 §102§103§112DP Final Rejection 12d Pending Mar 13, 2023
18091782 COLLAGEN WITH SELECTIVE CHARACTERISTICS, COLLAGEN PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME LIEB, JEANETTE M 1654 §102§103§112Other Non-Final OA — Pending Dec 30, 2022
17472897 BONE GRAFT SUBSTITUTE PARK, HAEJIN S 1614 §103§112DP Non-Final OA — Pending Sep 13, 2021
17234365 BONE GRAFT SUBSTITUTE PARK, HAEJIN S 1614 §103§112DP Non-Final OA — Pending Apr 19, 2021

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Frequently Asked Questions

How many pending USPTO office actions does Collagen Matrix Inc. have?

Collagen Matrix Inc. has 5 pending office actions as of October 2026, spread across 4 art units and 4 examiners.

Which USPTO examiner handles the most Collagen Matrix Inc. applications?

Haejin S Park has the most, with 2 of Collagen Matrix Inc.'s pending office actions.

What technology area are Collagen Matrix Inc.'s patent applications in?

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

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