Prosecution Insights
Last updated: October 25, 2026

Cardiovascular Systems Inc.

Technology area: Medical Devices & Mechanical Engineering

12 pending office actions • 3 art units • 9 examiners • 0 of 12 (0%) have an AI response strategy ready • 17 patents granted in the last 365 days

Analysis

Cardiovascular Systems Inc. has 13 pending office actions active in the Medical Devices & Mechanical Engineering technology area. These 13 actions are distributed among 9 distinct examiners and 3 distinct art units. Lindsey Rae Rivers is the busiest examiner with 3 pending actions, representing a portion of the portfolio. The concentration of 13 actions within 3 distinct art units suggests that multiple examiners are working within the same departmental groups, which may lead to consistent examination standards.

With 9 distinct examiners handling 13 pending office actions, some examiners are responsible for multiple matters. The 3 distinct art units indicate a focused technological scope, as the 13 actions are not spread across a wide variety of USPTO divisions. This concentration allows practitioners to focus on the specific standards of 3 art units even as they manage 9 different examiner relationships. The 13 pending actions benefit from this departmental focus, as the 3 art units likely share common precedents. Managing 9 examiners across 3 art units provides a concentrated regulatory environment for the portfolio.

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

Portfolio Summary

12
Total Pending OAs
6
Non-Final OAs
6
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.

1
Overdue
0
Due this week
1
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 (1)Due ≤ 30 days (1)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.

6
Hard (50%)
6
Medium (50%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (8%)
§103 only6 (50%)
Multi-statute (no §101)5 (42%)

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
0
Communications
0% of docket
0
Semiconductors
0% of docket
12
Mechanical / Eng
100% 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.

120 h
Manual time on pending OAs
24 h
Time saved (low, 20%)
42 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
POLAND, CHERIE MICHELLE 3 59.6% +33.2%
RIVERS, LINDSEY RAE 2 63.5% +59.0%
LOUIS, RICHARD G 1 74.7% +17.2%
NGUYEN, TUAN VAN 1 81.7% +19.4%
SCHAETZLE, KENNEDY 1 83.7% +8.2%
TANNER, JOCELIN C 1 72.3% +34.7%
DANG, PHONG SON H 1 78.0% +24.4%
HOLLM, JONATHAN ADAM 1 50.5% +52.7%
DARB, HAMZA A. 1 74.5% +31.1%

Hard Cases (6)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 6 ordered by deadline are shown.

App #TitleExaminerDue in
18906647 REDUCER FOR CRITICAL LIMB ISCHEMIA AND CRITICAL HAND ISCHEMIA TANNER, JOCELIN C 35d overdue
19120110 INTRAVASCULAR LITHOTRIPSY DEVICES AND SYSTEMS SYSTEM WITH FORWARD FACING ELECTRODES AND FLEX CIRCUIT ARRANGEMENTS NGUYEN, TUAN VAN —
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE —
19106491 RAPID EXCHANGE BLOOD PUMP WITH STRAIGHT GUIDEWIRE PATH THROUGH PUMP HOUSING SCHAETZLE, KENNEDY —
18991526 INTRAVASCULAR LITHOTRIPSY ALGORITHM FOR IMPROVED BALLOON DURABILITY RIVERS, LINDSEY RAE —
18991527 Intravascular Lithoplasty System With Improved Durability, Efficiency and Pressure Output Variability POLAND, CHERIE MICHELLE —

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
18906647 REDUCER FOR CRITICAL LIMB ISCHEMIA AND CRITICAL HAND ISCHEMIA TANNER, JOCELIN C 35d overdue
17938490 ROTATIONAL DRIVE SHAFTS AND INTRAVASCULAR MEDICAL DEVICES THEREOF POLAND, CHERIE MICHELLE 20d
18866415 MANAGEMENT OF STORED ANGULAR MOMENTUM IN STALLED INTRAVASCULAR ROTATIONAL DRIVE SHAFTS FOR ATHERECTOMY POLAND, CHERIE MICHELLE 35d
19129816 INTRAVASCULAR LITHOTRIPSY DEVICES WITH THIN-WALLED BALLOONS AND SYSTEMS LOUIS, RICHARD G —
19120110 INTRAVASCULAR LITHOTRIPSY DEVICES AND SYSTEMS SYSTEM WITH FORWARD FACING ELECTRODES AND FLEX CIRCUIT ARRANGEMENTS NGUYEN, TUAN VAN —
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE —
18991526 INTRAVASCULAR LITHOTRIPSY ALGORITHM FOR IMPROVED BALLOON DURABILITY RIVERS, LINDSEY RAE —
18991527 Intravascular Lithoplasty System With Improved Durability, Efficiency and Pressure Output Variability POLAND, CHERIE MICHELLE —

Top Art Units

Art UnitApps
3771 10
3796 1
3783 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19129816 INTRAVASCULAR LITHOTRIPSY DEVICES WITH THIN-WALLED BALLOONS AND SYSTEMS LOUIS, RICHARD G 3771 §103 Non-Final OA — Pending May 14, 2025
19120110 INTRAVASCULAR LITHOTRIPSY DEVICES AND SYSTEMS SYSTEM WITH FORWARD FACING ELECTRODES AND FLEX CIRCUIT ARRANGEMENTS NGUYEN, TUAN VAN 3771 §102§103§112 Non-Final OA — Pending Apr 10, 2025
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE 3771 §101§103§112 Non-Final OA — Pending Apr 04, 2025
19106491 RAPID EXCHANGE BLOOD PUMP WITH STRAIGHT GUIDEWIRE PATH THROUGH PUMP HOUSING SCHAETZLE, KENNEDY 3796 §102§103§112 Non-Final OA — Pending Feb 25, 2025
18991526 INTRAVASCULAR LITHOTRIPSY ALGORITHM FOR IMPROVED BALLOON DURABILITY RIVERS, LINDSEY RAE 3771 §103§112 Non-Final OA — Pending Dec 21, 2024
18991527 Intravascular Lithoplasty System With Improved Durability, Efficiency and Pressure Output Variability POLAND, CHERIE MICHELLE 3771 §102§103§112 Non-Final OA — Pending Dec 21, 2024
18866415 MANAGEMENT OF STORED ANGULAR MOMENTUM IN STALLED INTRAVASCULAR ROTATIONAL DRIVE SHAFTS FOR ATHERECTOMY POLAND, CHERIE MICHELLE 3771 §103 Final Rejection 35d Pending Nov 15, 2024
18906647 REDUCER FOR CRITICAL LIMB ISCHEMIA AND CRITICAL HAND ISCHEMIA TANNER, JOCELIN C 3771 §102§103 Final Rejection 35d overdue Pending Oct 04, 2024
18632431 ROTATIONAL SYSTEMS COMPRISING A POLYMER DRIVESHAFT DANG, PHONG SON H 3771 §103 Final Rejection — Pending Apr 11, 2024
18393260 INTRAVASCULAR LITHOTRIPSY DEVICES AND SYSTEMS HAVING SPARK MONITORING FEEDBACK HOLLM, JONATHAN ADAM 3771 §103 Final Rejection — Pending Dec 21, 2023
17938490 ROTATIONAL DRIVE SHAFTS AND INTRAVASCULAR MEDICAL DEVICES THEREOF POLAND, CHERIE MICHELLE 3771 §103 Final Rejection 20d Pending Oct 06, 2022
17809668 GUIDE EXTENSION CATHETERS DARB, HAMZA A. 3783 §103 Final Rejection — Pending Jun 29, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Cardiovascular Systems Inc. have?

Cardiovascular Systems Inc. has 12 pending office actions as of October 2026, spread across 3 art units and 9 examiners.

Which USPTO examiner handles the most Cardiovascular Systems Inc. applications?

Cherie Michelle Poland has the most, with 3 of Cardiovascular Systems Inc.'s pending office actions.

What technology area are Cardiovascular Systems 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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