Prosecution Insights
Last updated: October 02, 2026

Arkray Inc.

Technology area: Chemistry & Materials

21 pending office actions • 14 art units • 20 examiners • 0 of 21 (0%) have an AI response strategy ready • 27 patents granted in the last 365 days

Analysis

Arkray Inc. maintains a robust portfolio with 22 pending office actions in the Chemistry & Materials technology area. This high volume of activity is distributed across 21 distinct examiners and 15 distinct art units, reflecting a broad and complex prosecution strategy. The busiest examiner, QIAN, SHIZHI, is managing 2 busiest examiner pending actions.

The presence of 15 distinct art units suggests that the company's chemistry and materials innovations span a wide range of specialized sub-fields. With 21 distinct examiners involved, the company must navigate a diverse array of examination styles and requirements. Because QIAN, SHIZHI only handles 2 of the 22 pending office actions, the portfolio is well-diversified, and no single examiner's decisions can significantly impact the overall success of the company's current patenting efforts. This level of distribution across 15 distinct art units typically requires a highly coordinated legal strategy to ensure consistency. Practitioners managing such a large number of pending matters must be prepared for a high frequency of USPTO correspondence and varying timelines across the 21 distinct examiners.

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

Portfolio Summary

21
Total Pending OAs
9
Non-Final OAs
10
Final Rejections
2
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.

4
Overdue
0
Due this week
1
Due this month
0
Due in next 60 days
1
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 (4)Due ≤ 30 days (1)Due later (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.

16
Hard (76%)
5
Medium (24%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only1 (5%)
§101 + other5 (24%)
§103 only4 (19%)
§102 only1 (5%)
Multi-statute (no §101)10 (48%)

Industry Mix

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

12
Life Sciences
57% of docket
2
Information Tech
10% of docket
2
Communications
10% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
5% of docket
4
Business / Other
19% 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.

210 h
Manual time on pending OAs
42 h
Time saved (low, 20%)
74 h
Time saved (mid, 35%)
1.8 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
QIAN, SHIZHI 2 61.8% +47.9%
HEIBER, SHANTELL LAKETA 1 77.4% +19.8%
AHSAN, SYED M 1 73.1% +22.3%
NGUYEN, LEON VIET Q 1 85.3% +9.9%
GORDON, BRIAN R 1 65.2% +18.9%
GZYBOWSKI, MICHAEL STANLEY 1 68.3% +52.0%
MENON, KRISHNAN S 1 59.7% +11.7%
CAIN, JENNIFER LYNN 1 45.0% +70.0%
WHATLEY, BENJAMIN R 1 66.7% +68.5%
SUN, CAITLYN MINGYUN 1 63.5% +11.9%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18667491 Determining Material Component Concentrations In A Sample NGUYEN, LEON VIET Q —

Hard Cases (16)

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
18108819 ELECTRODE FOR MEASURING GLUCOSE AND ELECTROCHEMICAL SENSOR INCLUDING THE SAME JANG, CHRISTIAN Y 36d overdue
16091641 Method for Determining Stage of Periodontal Disease MARTIN, PAUL C 16d overdue
18123480 METHOD OF MEASURING HEMOGLOBIN F PEO, KARA M 5d overdue
18383317 SAMPLE ANALYSIS METHOD, SAMPLE PRODUCTION METHOD, DILUENT FOR DILUTING ALBUMIN- AND y-GLOBULIN-CONTAINING SAMPLE, AND SAMPLE ANALYSIS KIT QIAN, SHIZHI 14d
18468585 QUALITY CONTROL SUBSTANCE FOR USE IN THE ANALYSIS OF LEUKOCYTES COLE, HOUSTON DAVID 62d
18930395 ELECTROPHORESIS UNIT, COMPONENT ANALYSIS DEVICE, ELECTROPHORESIS METHOD QIAN, SHIZHI —
18910833 MEASUREMENT SYSTEM HEIBER, SHANTELL LAKETA —
18662069 ANALYSIS SYSTEM GORDON, BRIAN R —

Interview Candidates (10)

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
18383357 SAMPLE ANALYSIS METHOD, CAPILLARY ELECTROPHORESIS SOLUTION, AND SAMPLE ANALYSIS KIT SUN, CAITLYN MINGYUN 24d overdue
18383317 SAMPLE ANALYSIS METHOD, SAMPLE PRODUCTION METHOD, DILUENT FOR DILUTING ALBUMIN- AND y-GLOBULIN-CONTAINING SAMPLE, AND SAMPLE ANALYSIS KIT QIAN, SHIZHI 14d
18930395 ELECTROPHORESIS UNIT, COMPONENT ANALYSIS DEVICE, ELECTROPHORESIS METHOD QIAN, SHIZHI —
18910833 MEASUREMENT SYSTEM HEIBER, SHANTELL LAKETA —
18910852 MEASUREMENT SYSTEM AHSAN, SYED M —
18662069 ANALYSIS SYSTEM GORDON, BRIAN R —
18658924 MEASUREMENT METHOD AND MEASUREMENT SYSTEM GZYBOWSKI, MICHAEL STANLEY —
18627829 METHOD OF TREATING MEASUREMENT FLOW CHANNEL AND LIQUID CHROMATOGRAPHY DEVICE MENON, KRISHNAN S —

Top Art Units

Art UnitApps
2663 2
1795 2
1796 2
2415 1
2491 1
1655 1
1798 1
1758 1
1797 1
1633 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18930395 ELECTROPHORESIS UNIT, COMPONENT ANALYSIS DEVICE, ELECTROPHORESIS METHOD QIAN, SHIZHI — §102§103§112 Non-Final OA — Pending Oct 29, 2024
18910833 MEASUREMENT SYSTEM HEIBER, SHANTELL LAKETA 2415 §102§103 Non-Final OA — Pending Oct 09, 2024
18910852 MEASUREMENT SYSTEM AHSAN, SYED M 2491 §103 Non-Final OA — Pending Oct 09, 2024
18667491 Determining Material Component Concentrations In A Sample NGUYEN, LEON VIET Q 2663 §103 Final Rejection — Pending May 17, 2024
18662069 ANALYSIS SYSTEM GORDON, BRIAN R — §102§112 Non-Final OA — Pending May 13, 2024
18658924 MEASUREMENT METHOD AND MEASUREMENT SYSTEM GZYBOWSKI, MICHAEL STANLEY — §103 Non-Final OA — Pending May 08, 2024
18627829 METHOD OF TREATING MEASUREMENT FLOW CHANNEL AND LIQUID CHROMATOGRAPHY DEVICE MENON, KRISHNAN S — §102§103§112 Final Rejection — Pending Apr 05, 2024
18603803 PHOSPHODIESTERASE 5 INHIBITOR CAIN, JENNIFER LYNN 1655 §102§103§112 Non-Final OA — Pending Mar 13, 2024
18494729 MEASUREMENT SYSTEM WHATLEY, BENJAMIN R 1798 §101§103§112 Final Rejection — Pending Oct 25, 2023
18383317 SAMPLE ANALYSIS METHOD, SAMPLE PRODUCTION METHOD, DILUENT FOR DILUTING ALBUMIN- AND y-GLOBULIN-CONTAINING SAMPLE, AND SAMPLE ANALYSIS KIT QIAN, SHIZHI 1795 §103§112 Non-Final OA 14d Pending Oct 24, 2023
18383357 SAMPLE ANALYSIS METHOD, CAPILLARY ELECTROPHORESIS SOLUTION, AND SAMPLE ANALYSIS KIT SUN, CAITLYN MINGYUN 1795 §103 Non-Final OA 24d overdue Pending Oct 24, 2023
18468585 QUALITY CONTROL SUBSTANCE FOR USE IN THE ANALYSIS OF LEUKOCYTES COLE, HOUSTON DAVID 1758 §101§112 Non-Final OA 62d Pending Sep 15, 2023
18467439 ACCURACY MANAGEMENT METHOD, HOLDING TOOL, AND MEASUREMENT DEVICE LIMBAUGH, KATHRYN ELIZABETH 1797 §101§103 Final Rejection — Pending Sep 14, 2023
18323196 QUALITY CONTROL SUBSTANCE USED IN URINE SEDIMENT ANALYZER WESTON, ALYSSA G 1633 §102§103 Final Rejection — Pending May 24, 2023
18323170 PRESERVATION LIQUID FOR CALCIUM OXALATE DIHYDRATE CRYSTALS AND PRESERVATION METHOD KUMAR, SRILAKSHMI K 1796 §102§103 Non-Final OA — Pending May 24, 2023
18133591 IMAGE PROCESSING DEVICE, DATA MANAGEMENT DEVICE, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND NON-TRANSITORY STORAGE MEDIUM ORANGE, DAVID BENJAMIN 2663 §102 Final Rejection — Pending Apr 12, 2023
18123477 METHOD OF MEASURING HEMOGLOBIN F BERKELEY, EMILY R 1796 §101§103§112 Non-Final OA — Pending Mar 20, 2023
18123480 METHOD OF MEASURING HEMOGLOBIN F PEO, KARA M 1777 §101§103 Final Rejection 5d overdue Pending Mar 20, 2023
18108819 ELECTRODE FOR MEASURING GLUCOSE AND ELECTROCHEMICAL SENSOR INCLUDING THE SAME JANG, CHRISTIAN Y 3791 §102§103 Final Rejection 36d overdue Pending Feb 13, 2023
17511794 Analytical Tool and Analytical System OSMAN, SOMMER YOUSEF 1794 §103§112 Final Rejection — Pending Oct 27, 2021
16091641 Method for Determining Stage of Periodontal Disease MARTIN, PAUL C 1653 §101 Final Rejection 16d overdue Pending Oct 05, 2018

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