Prosecution Insights
Last updated: October 25, 2026

Zimmer Inc.

Technology area: Medical Devices & Mechanical Engineering

19 pending office actions • 9 art units • 17 examiners • 0 of 19 (0%) have an AI response strategy ready • 28 patents granted in the last 365 days

Analysis

Zimmer Inc. has 18 pending office actions in Medical Devices & Mechanical Engineering. The matters involve 16 distinct examiners and 9 distinct art units, showing a broad examiner spread across a more compact set of technical groups. PELLEGRINO, BRIAN E is the busiest examiner, with 2 pending matters.

The difference between the action count and examiner count indicates that some examiners handle multiple matters, although the busiest examiner has only 2. The art-unit figure provides a useful coordination layer for portfolio review, while the examiner dispersion calls for individualized prosecution histories. Counsel should track recurring issues by art unit without treating the matters as a single examiner docket.

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

Portfolio Summary

19
Total Pending OAs
10
Non-Final OAs
4
Final Rejections
5
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
0
Due this month
1
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.

12
Hard (63%)
6
Medium (32%)
1
Easy (5%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (5%)
§103 only4 (21%)
§102 only2 (11%)
§112 only1 (5%)
Multi-statute (no §101)11 (58%)

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
1
Communications
5% of docket
0
Semiconductors
0% of docket
18
Mechanical / Eng
95% 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.

190 h
Manual time on pending OAs
38 h
Time saved (low, 20%)
66 h
Time saved (mid, 35%)
1.7 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
PELLEGRINO, BRIAN E 2 55.4% +35.9%
DUDDEN, TERESA MARIE 2 48.1% +45.2%
RAYMOND, LINNAE ELIZABETH 1 50.4% +50.4%
KOPPOLU, VAISALI RAO 1 79.6% +26.3%
BARIA, DINAH N 1 72.9% +28.5%
HANNA, SAMUEL SALEEB 1 58.3% +36.6%
LYNCH, ROBERT A 1 80.3% +12.9%
SIPP, AMY R. 1 71.1% +26.0%
FLORES, ADRIAN 1 100.0% +0.0%
WEISS, JESSICA 1 81.0% +32.8%

Hard Cases (12)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
18368980 SYSTEM OF MODULAR REAMERS AND BROACHES LAWSON, MATTHEW JAMES 10d overdue
18494526 IMPLANTABLE SENSING DEVICE CONFIGURED FOR MOUNTING ON OUTER SURFACE OF BONE LIU, CHU CHUAN 35d
19023150 SYSTEMS AND METHODS FOR BONE AND TISSUE HARVESTING RAYMOND, LINNAE ELIZABETH —
18990839 PLANNING SYSTEM FOR PREVENTING INTRAOPERATIVE BONE FRACTURE KOPPOLU, VAISALI RAO —
18889792 ANATOMICALLY SHAPED INLAY STEMLESS SHOULDER IMPLANT LYNCH, ROBERT A —
18584483 PROSTHETIC ANCHORING COMPONENTS WITH INTERNAL VOIDS FLORES, ADRIAN —
18538990 FEMORAL TRIAL HEAD WEISS, JESSICA —
18528042 ANTI-LUXATION DEVICES FOR A CONSTRAINED PROSTHETIC KNEE WOLF, MEGAN YARNALL —

Interview Candidates (11)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
19023150 SYSTEMS AND METHODS FOR BONE AND TISSUE HARVESTING RAYMOND, LINNAE ELIZABETH —
18990839 PLANNING SYSTEM FOR PREVENTING INTRAOPERATIVE BONE FRACTURE KOPPOLU, VAISALI RAO —
18936524 INFINITELY ADJUSTABLE AUGMENT ANGLE BASEPLATE BARIA, DINAH N —
18920320 TENSOR DEVICE FOR REVISION KNEE ARTHROPLASTY HANNA, SAMUEL SALEEB —
18889792 ANATOMICALLY SHAPED INLAY STEMLESS SHOULDER IMPLANT LYNCH, ROBERT A —
18658145 ORTHOPEDIC REAMING DEVICES AND METHODS SIPP, AMY R. —
18538990 FEMORAL TRIAL HEAD WEISS, JESSICA —
18233857 TIBIAL PROSTHESIS WITH DISTAL FEATURES FOR CEMENTED FIXATION PELLEGRINO, BRIAN E —

Top Art Units

Art UnitApps
3774 6
3775 4
3791 2
3799 2
3781 1
2664 1
3771 1
3773 1
3619 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19023150 SYSTEMS AND METHODS FOR BONE AND TISSUE HARVESTING RAYMOND, LINNAE ELIZABETH 3781 §103§112 Non-Final OA — Pending Jan 15, 2025
18990839 PLANNING SYSTEM FOR PREVENTING INTRAOPERATIVE BONE FRACTURE KOPPOLU, VAISALI RAO 2664 §101§102§103 Non-Final OA — Pending Dec 20, 2024
18936524 INFINITELY ADJUSTABLE AUGMENT ANGLE BASEPLATE BARIA, DINAH N 3774 §102 Non-Final OA — Pending Nov 04, 2024
18920320 TENSOR DEVICE FOR REVISION KNEE ARTHROPLASTY HANNA, SAMUEL SALEEB 3775 §102 Final Rejection — Pending Oct 18, 2024
18889792 ANATOMICALLY SHAPED INLAY STEMLESS SHOULDER IMPLANT LYNCH, ROBERT A 3771 §102§103 Non-Final OA — Pending Sep 19, 2024
18658145 ORTHOPEDIC REAMING DEVICES AND METHODS SIPP, AMY R. 3775 §103 Non-Final OA — Pending May 08, 2024
18584483 PROSTHETIC ANCHORING COMPONENTS WITH INTERNAL VOIDS FLORES, ADRIAN 3774 §102§103 Non-Final OA — Pending Feb 22, 2024
18538990 FEMORAL TRIAL HEAD WEISS, JESSICA 3775 §102§103§112 Non-Final OA — Pending Dec 13, 2023
18528042 ANTI-LUXATION DEVICES FOR A CONSTRAINED PROSTHETIC KNEE WOLF, MEGAN YARNALL 3774 §102§103 Non-Final OA — Pending Dec 04, 2023
18526955 SEGMENTED KEEL FOR PROSTHETIC IMPLANT HAVING A STEM ROBERT, EDUARDO C 3773 §103§112 Non-Final OA — Pending Dec 01, 2023
18494526 IMPLANTABLE SENSING DEVICE CONFIGURED FOR MOUNTING ON OUTER SURFACE OF BONE LIU, CHU CHUAN 3791 §102§103 Non-Final OA 35d Pending Oct 25, 2023
18368980 SYSTEM OF MODULAR REAMERS AND BROACHES LAWSON, MATTHEW JAMES 3619 §102§103 Non-Final OA 10d overdue Pending Sep 15, 2023
18233857 TIBIAL PROSTHESIS WITH DISTAL FEATURES FOR CEMENTED FIXATION PELLEGRINO, BRIAN E 3799 §103Other Final Rejection — Pending Aug 14, 2023
18227664 ANATOMICALLY SHAPED STEMLESS SHOULDER FOR TOTAL SHOULDER REPLACEMENT AND REVERSE TOTAL SHOULDER DUDDEN, TERESA MARIE 3774 §102§103 Non-Final OA — Pending Jul 28, 2023
18221153 SPACER BLOCKS, SYSTEMS AND METHODS FOR TRIALING KNEE JOINT PELLEGRINO, BRIAN E 3799 §112 Final Rejection — Pending Jul 12, 2023
17865889 BODY AREA NETWORK HAVING SENSING CAPABILITY MCCORMACK, ERIN KATHLEEN 3791 §103§112 Non-Final OA — Pending Jul 15, 2022
17791751 MOBILE BEARING REVERSED HUMERAL IMPLANT DUDDEN, TERESA MARIE 3774 §103 Non-Final OA — Pending Jul 08, 2022
17749102 ROBOTIC KNEE REPLACEMENT PROCEDURE AND INSTRUMENTS WOODALL, NICHOLAS W 3775 §103 Non-Final OA — Pending May 19, 2022
17591383 ADDITIVE MANUFACTURED FEMORAL COMPONENTS PRONE, CHRISTOPHER D 3774 §102§103 Final Rejection — Pending Feb 02, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Zimmer Inc. have?

Zimmer Inc. has 19 pending office actions as of October 2026, spread across 9 art units and 17 examiners.

Which USPTO examiner handles the most Zimmer Inc. applications?

Brian E Pellegrino has the most, with 2 of Zimmer Inc.'s pending office actions.

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

Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.

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