Prosecution Insights
Last updated: October 25, 2026

Miromatrix Medical Inc.

Technology areas: Biotechnology & Pharmaceuticals • Chemistry & Materials

5 pending office actions • 5 art units • 5 examiners • 0 of 5 (0%) have an AI response strategy ready • 1 patents granted in the last 365 days

Analysis

Miromatrix Medical Inc. maintains 6 pending office actions in the Biotechnology & Pharmaceuticals technology area. These actions are spread across 6 distinct art units, showing a diverse range of technical classifications for their biological and pharmaceutical filings. The portfolio is being reviewed by 6 distinct examiners, with each examiner handling exactly one action. This distribution indicates that no single examiner or art unit currently dominates the company's pending patent prosecution, requiring a broad strategy across multiple USPTO divisions.

GU, QINHUA is the busiest examiner with 1 pending action. This highlights the lack of concentration in the portfolio, as even the most active examiner for this company only manages a single case. For a practitioner, this means that the prosecution of these 6 pending office actions will likely proceed independently of one another. The involvement of 6 distinct art units further suggests that the company's innovations touch on several different specialized fields within biotechnology. This variety requires the legal team to be prepared for different examination styles and technical standards across the various art units. The current data reflects a decentralized prosecution environment where each application is subject to a unique set of examiner expectations.

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
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
0
Due in next 60 days
1
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.

4
Hard (80%)
1
Medium (20%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (20%)
Multi-statute (no §101)4 (80%)

Industry Mix

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

5
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.

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
GU, QINHUA 1 76.2% +27.1%
KASAYAN, KATRIEL BARCELLANO 1 25.0% +0.0%
ESPERON, NATHAN GREGORY 1 41.0% +23.3%
EBBINGHAUS, BRIANA NOEL 1 59.7% +63.0%
BARRON, SEAN C 1 52.7% +30.4%

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
18759375 Manufacturing of Bioengineered Recellularized Organs and Methods of Use Thereof GU, QINHUA —
18680248 Methods and Uses of Differentiated Cells KASAYAN, KATRIEL BARCELLANO —
18702789 EXTRACORPOREAL ORGAN SUPPORT SYSTEM ESPERON, NATHAN GREGORY —
17111577 METHODS OF LIVER RECELLULARIZATION BARRON, SEAN C —

Interview Candidates (4)

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 4 ordered by deadline are shown.

App #TitleExaminerDue in
17440914 Improved Decellularization of Isolated Organs EBBINGHAUS, BRIANA NOEL 71d
18759375 Manufacturing of Bioengineered Recellularized Organs and Methods of Use Thereof GU, QINHUA —
18702789 EXTRACORPOREAL ORGAN SUPPORT SYSTEM ESPERON, NATHAN GREGORY —
17111577 METHODS OF LIVER RECELLULARIZATION BARRON, SEAN C —

Top Art Units

Art UnitApps
1633 1
1634 1
1799 1
1632 1
1653 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18759375 Manufacturing of Bioengineered Recellularized Organs and Methods of Use Thereof GU, QINHUA 1633 §103§112 Non-Final OA — Pending Jun 28, 2024
18680248 Methods and Uses of Differentiated Cells KASAYAN, KATRIEL BARCELLANO 1634 §103§112 Non-Final OA — Pending May 31, 2024
18702789 EXTRACORPOREAL ORGAN SUPPORT SYSTEM ESPERON, NATHAN GREGORY 1799 §103§112 Non-Final OA — Pending Apr 18, 2024
17440914 Improved Decellularization of Isolated Organs EBBINGHAUS, BRIANA NOEL 1632 §103 Final Rejection 71d Pending Sep 20, 2021
17111577 METHODS OF LIVER RECELLULARIZATION BARRON, SEAN C 1653 §102§103 Final Rejection — Pending Dec 04, 2020

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Frequently Asked Questions

How many pending USPTO office actions does Miromatrix Medical Inc. have?

Miromatrix Medical Inc. has 5 pending office actions as of October 2026, spread across 5 art units and 5 examiners.

Which USPTO examiner handles the most Miromatrix Medical Inc. applications?

Qinhua Gu has the most, with 1 of Miromatrix Medical Inc.'s pending office actions.

What technology area are Miromatrix Medical 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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