Prosecution Insights
Last updated: October 01, 2026

Varian Inc.

Technology areas: Semiconductors, Circuits & Optics • Medical Devices & Mechanical Engineering

34 pending office actions • 14 art units • 30 examiners • 0 of 34 (0%) have an AI response strategy ready • 31 patents granted in the last 365 days

Analysis

Varian Inc. is managing a portfolio of 34 pending office actions within the Medical Devices & Mechanical Engineering technology area. These matters are distributed across 14 distinct art units, showing a broad technical reach within the medical device sector. The prosecution involves 30 distinct examiners, which indicates that the company's patent applications are being reviewed by a diverse group of individuals.

The busiest examiner, KAO, CHIH CHENG G, is currently handling 2 pending actions. This means that 30 distinct examiners are involved in the 34 pending office actions, requiring the prosecution team to manage a wide variety of individual preferences. With 34 pending office actions and 14 distinct art units, the administrative complexity of this portfolio is a factor. Practitioners should focus on maintaining consistency across the 14 distinct art units while navigating the individual requirements of KAO, CHIH CHENG G and the other 30 distinct examiners currently reviewing these Medical Devices & Mechanical Engineering applications.

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

Portfolio Summary

34
Total Pending OAs
21
Non-Final OAs
12
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 6 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

3
Overdue
0
Due this week
3
Due this month
0
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. 6 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (3)Due ≤ 30 days (3)

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.

20
Hard (59%)
14
Medium (41%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other4 (12%)
§103 only12 (35%)
§102 only2 (6%)
Multi-statute (no §101)16 (47%)

Industry Mix

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

3
Life Sciences
9% of docket
1
Information Tech
3% of docket
2
Communications
6% of docket
11
Semiconductors
32% of docket
16
Mechanical / Eng
47% of docket
1
Business / Other
3% 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.

340 h
Manual time on pending OAs
68 h
Time saved (low, 20%)
119 h
Time saved (mid, 35%)
3.0 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KAO, CHIH CHENG G 2 82.6% +9.5%
OUYANG, BO 2 60.6% +8.8%
PEFFLEY, MICHAEL F 2 77.8% +13.0%
SARCENO ROBLES, CHRISTIAN MANUEL 2 50.0% +100.0%
LEE, WILSON 1 86.7% +3.3%
PREMRAJ, CATHERINE C 1 56.5% +48.6%
NGUYEN, VI X 1 85.8% +13.4%
LIU, GORDON G 1 82.9% +14.8%
DOWNING, SAVANNAH STARR 1 79.1% +5.9%
TANINGCO, MARCUS H 1 81.0% +6.6%

Quick Wins (4)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
19023737 SYSTEMS, APPARATUSES, AND METHODS OF MANUFACTURING LINEAR ACCELERATORS LEE, WILSON —
18999414 THROMBECTOMY APPARATUS AND METHOD NGUYEN, VI X —
18978177 METHOD AND APPARATUS TO GENERATE IMAGERY REGARDING A PATIENT'S HEART LIU, GORDON G —
18353260 RADIATION TREATMENT PLANNING AND DELIVERY FOR MOVING TARGETS IN THE HEART KAO, CHIH CHENG G —

Hard Cases (20)

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
18673692 SYSTEM AND METHOD TO GUIDE A NEEDLE OKONAK, ELIZABETH LOUISE 2d overdue
18451174 BIODEGRADABLE RADIOPAQUE MICROSPHERE MOSHER, ERIC PARKER 14d
17204657 USE OF MAGNETIC ELEMENTS TO SHAPE AND DEFOCUS CHARGED PARTICLE BEAMS OSENBAUGH-STEWART, ELIZA W 29d
19006675 CRYOABLATION PROBE WITH INTEGRATED VACUUM SLEEVE PREMRAJ, CATHERINE C —
18946970 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND ROTATABLE TREATMENT COUCH TANINGCO, MARCUS H —
18946979 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND MOVABLE COLLISION SHIELD KAO, CHIH CHENG G —
18946984 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND CONICAL TRUSS RIDDICK, BLAKE CUTLER —
18896958 PATIENT MARKING AND POSITIONING IN A RADIATION THERAPY SYSTEM ARTMAN, THOMAS R —

Interview Candidates (7)

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 7 ordered by deadline are shown.

App #TitleExaminerDue in
19006675 CRYOABLATION PROBE WITH INTEGRATED VACUUM SLEEVE PREMRAJ, CATHERINE C —
18999414 THROMBECTOMY APPARATUS AND METHOD NGUYEN, VI X —
18978177 METHOD AND APPARATUS TO GENERATE IMAGERY REGARDING A PATIENT'S HEART LIU, GORDON G —
18778517 MICROWAVE ABLATION PROBE TIP WITH CENTERING TUBE PEFFLEY, MICHAEL F —
18778666 MICROWAVE ABLATION PROBE WITH INTEGRATED TEMPERATURE SENSORS SARCENO ROBLES, CHRISTIAN MANUEL —
18778462 APPARATUSES AND METHODS FOR TEMPERATURE MEASUREMENT AT ABLATION PROBE HANDLE SARCENO ROBLES, CHRISTIAN MANUEL —
18523762 COOLANT STATUS MONITORING FOR MICROWAVE ABLATION PROBE PEFFLEY, MICHAEL F —

Top Art Units

Art UnitApps
3794 14
2884 7
2845 1
3771 1
2618 1
3792 1
2878 1
2682 1
1612 1
1618 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19023737 SYSTEMS, APPARATUSES, AND METHODS OF MANUFACTURING LINEAR ACCELERATORS LEE, WILSON 2845 §103 Final Rejection — Pending Jan 16, 2025
19006675 CRYOABLATION PROBE WITH INTEGRATED VACUUM SLEEVE PREMRAJ, CATHERINE C 3794 §102§103§112 Non-Final OA — Pending Dec 31, 2024
18999414 THROMBECTOMY APPARATUS AND METHOD NGUYEN, VI X 3771 §102 Non-Final OA — Pending Dec 23, 2024
18978177 METHOD AND APPARATUS TO GENERATE IMAGERY REGARDING A PATIENT'S HEART LIU, GORDON G 2618 §103 Non-Final OA — Pending Dec 12, 2024
18956194 METAL WINDOW ION CHAMBERS AND RADIATION APPARATUSES INCLUDING THE SAME DOWNING, SAVANNAH STARR 2884 §103 Non-Final OA — Pending Nov 22, 2024
18946970 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND ROTATABLE TREATMENT COUCH TANINGCO, MARCUS H 2884 §102§103 Non-Final OA — Pending Nov 14, 2024
18946979 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND MOVABLE COLLISION SHIELD KAO, CHIH CHENG G 2884 §102§103 Non-Final OA — Pending Nov 14, 2024
18946984 RADIATION THERAPY SYSTEM WITH O-RING LINAC AND CONICAL TRUSS RIDDICK, BLAKE CUTLER 2884 §103§112 Non-Final OA — Pending Nov 14, 2024
18904182 METHOD AND APPARATUS IN SUPPORT OF ABLATING A TARGET VOLUME OUYANG, BO 3794 §102 Non-Final OA — Pending Oct 02, 2024
18896958 PATIENT MARKING AND POSITIONING IN A RADIATION THERAPY SYSTEM ARTMAN, THOMAS R 2884 §102§103 Final Rejection — Pending Sep 26, 2024
18800871 APPARATUSES AND METHODS FOR CRYO-BASED ANESTHESIA OUYANG, BO 3794 §102§103 Non-Final OA — Pending Aug 12, 2024
18778517 MICROWAVE ABLATION PROBE TIP WITH CENTERING TUBE PEFFLEY, MICHAEL F 3794 §102§103 Non-Final OA — Pending Jul 19, 2024
18778579 MICROWAVE ABLATION PROBE COOLANT CONDUIT BOCK, ABIGAIL MARIE 3794 §103 Non-Final OA — Pending Jul 19, 2024
18778666 MICROWAVE ABLATION PROBE WITH INTEGRATED TEMPERATURE SENSORS SARCENO ROBLES, CHRISTIAN MANUEL 3794 §102§103 Non-Final OA — Pending Jul 19, 2024
18778462 APPARATUSES AND METHODS FOR TEMPERATURE MEASUREMENT AT ABLATION PROBE HANDLE SARCENO ROBLES, CHRISTIAN MANUEL 3794 §103 Non-Final OA — Pending Jul 19, 2024
18673692 SYSTEM AND METHOD TO GUIDE A NEEDLE OKONAK, ELIZABETH LOUISE 3792 §101§102§103§112 Final Rejection 2d overdue Pending May 24, 2024
18659419 COMPACT MODE CONVERTER WAVEGUIDE MASKELL, MICHAEL P 2878 §102§103 Non-Final OA — Pending May 09, 2024
18694293 METHODS AND APPARATUS FOR RADIOABLATION TREATMENT AREA TARGETING AND GUIDANCE LAM, ANDREW H 2682 §103 Final Rejection 2d overdue Pending Mar 21, 2024
18583485 TEMPERATURE VOLUME HISTOGRAM GENERATION APPARATUS AND METHOD RHODES, NORA W 3794 §102§103§112 Non-Final OA — Pending Feb 21, 2024
18393789 APPARATUSES AND METHODS FOR TARGETED VAPORIZATION OF CRYOGEN SHOULDERS, ANNIE LEE 3794 §103 Final Rejection — Pending Dec 22, 2023
18523762 COOLANT STATUS MONITORING FOR MICROWAVE ABLATION PROBE PEFFLEY, MICHAEL F 3794 §102§103 Non-Final OA — Pending Nov 29, 2023
18511250 MOTION COMPENSATION DURING RADIATION TREATMENT KUDO, KEN — §101§102§103§112Other Non-Final OA — Pending Nov 16, 2023
18376461 MULTI-SYSTEM SYNCHRONIZATION FOR OPTICAL SURFACE MONITORING SONG, HOON K 2884 §103 Non-Final OA 17d overdue Pending Oct 04, 2023
18477347 CONSOLE ARCHITECTURE FOR MICROWAVE ABLATION UNIT GIULIANI, THOMAS ANTHONY 3794 §102§103§112 Non-Final OA — Pending Sep 28, 2023
18477374 MICROWAVE ABLATION PROBE ASSEMBLY AND CABLE STRUCTURE HUPCZEY, JR, RONALD JAMES 3794 §103 Final Rejection 30d Pending Sep 28, 2023
18451174 BIODEGRADABLE RADIOPAQUE MICROSPHERE MOSHER, ERIC PARKER 1612 §103§112 Final Rejection 14d Pending Aug 17, 2023
18353260 RADIATION TREATMENT PLANNING AND DELIVERY FOR MOVING TARGETS IN THE HEART KAO, CHIH CHENG G 2884 §103 Non-Final OA — Pending Jul 17, 2023
18317696 SYSTEM AND METHODS FOR QUANTIFICATION OF SUBSTANCE CONCENTRATION IN BODY STRUCTURES USING SPECTRAL COMPUTED TOMOGRAPHY DICKINSON, PAUL W 1618 §102§112 Final Rejection — Pending May 15, 2023
17855257 SYSTEMS AND METHODS FOR RADIATION DOSE PLANNING FOR CARDIAC RADIATION THERAPY NEGIN, RUSSELL SCOTT 1686 §101§103§112 Non-Final OA — Pending Jun 30, 2022
17655218 APPARATUSES AND METHODS FOR MONITORING AND CONTROLLING BLEEDING DURING CRYOABLATION TREATMENTS MOSSBROOK, WILLIAM ERIC 3794 §103 Non-Final OA — Pending Mar 17, 2022
17655204 APPARATUSES AND METHODS FOR SEQUENTIAL HEATING OF CRYO-FLUID IN CRYOABLATION SYSTEMS CHA, CASEY GEORGE 3794 §101§103 Final Rejection — Pending Mar 17, 2022
17204657 USE OF MAGNETIC ELEMENTS TO SHAPE AND DEFOCUS CHARGED PARTICLE BEAMS OSENBAUGH-STEWART, ELIZA W 2881 §102§103 Final Rejection 29d Pending Mar 17, 2021
17538563 SEMICONDUCTOR MANUFACTURING DEVICE WITH EMBEDDED FLUID CONDUITS KIM, ROBERT H 2800 §102§103 Final Rejection — Pending Nov 30, 2021
15885498 FEEDBACK SYSTEM AND METHOD FOR TREATMENT PLANNING HEFFINGTON, JOHN M 2145 §103 Final Rejection — Pending Jan 31, 2018

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