Prosecution Insights
Last updated: October 02, 2026

Cardiovascular Systems Inc.

Technology area: Medical Devices & Mechanical Engineering

13 pending office actions • 2 art units • 8 examiners • 0 of 13 (0%) have an AI response strategy ready • 17 patents granted in the last 365 days

Analysis

Cardiovascular Systems Inc. manages a patent portfolio in the Medical Devices & Mechanical Engineering technology area with 12 pending office actions. These actions are spread across 2 distinct art units, suggesting that while the technology is focused, the administrative review is somewhat divided. The company interacts with 8 distinct examiners, which is fewer than the total number of pending office actions, indicating some examiners are handling multiple files.

RIVERS, LINDSEY RAE is the busiest examiner for the portfolio, currently overseeing 3 busiest examiner pending actions. This examiner manages a significant portion of the workload compared to the other individuals involved in the 12 pending office actions. This distribution within the Medical Devices & Mechanical Engineering sector requires a coordinated approach across the 2 distinct art units to manage the 8 distinct examiners effectively. Such a strategy ensures that the company addresses the specific requirements of each examiner while maintaining a cohesive narrative for its medical device innovations.

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

Portfolio Summary

13
Total Pending OAs
6
Non-Final OAs
7
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 (46%)
7
Medium (54%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other2 (15%)
§103 only7 (54%)
Multi-statute (no §101)4 (31%)

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
11
Mechanical / Eng
85% of docket
2
Business / Other
15% 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.

130 h
Manual time on pending OAs
26 h
Time saved (low, 20%)
46 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
RIVERS, LINDSEY RAE 4 64.1% +56.9%
POLAND, CHERIE MICHELLE 3 59.5% +33.3%
LOUIS, RICHARD G 1 74.7% +17.2%
NGUYEN, TUAN VAN 1 81.7% +19.5%
TANNER, JOCELIN C 1 72.2% +34.8%
DANG, PHONG SON H 1 78.0% +24.6%
HOLLM, JONATHAN ADAM 1 50.4% +53.3%
DARB, HAMZA A. 1 74.4% +30.9%

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 —
19171217 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE —
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE —
18991527 Intravascular Lithoplasty System With Improved Durability, Efficiency and Pressure Output Variability POLAND, CHERIE MICHELLE —
18991526 INTRAVASCULAR LITHOTRIPSY ALGORITHM FOR IMPROVED BALLOON DURABILITY RIVERS, LINDSEY RAE —

Interview Candidates (13)

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 —
19171217 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE —
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF 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
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
19171217 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE — §101§103§112 Non-Final OA — Pending Apr 05, 2025
19170918 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE — §101§103§112 Non-Final OA — Pending Apr 04, 2025
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
18991526 INTRAVASCULAR LITHOTRIPSY ALGORITHM FOR IMPROVED BALLOON DURABILITY RIVERS, LINDSEY RAE 3771 §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
18290173 CONTROL OF IVL SYSTEMS, DEVICES AND METHODS THEREOF RIVERS, LINDSEY RAE 3771 §103 Final Rejection — Pending Nov 10, 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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