Prosecution Insights
Last updated: October 04, 2026

Cancer Research Technology Limited

Technology area: Biotechnology & Pharmaceuticals

8 pending office actions • 7 art units • 8 examiners • 0 of 8 (0%) have an AI response strategy ready • 4 patents granted in the last 365 days

Analysis

Cancer Research Technology Limited is managing 8 pending office actions within the Biotechnology & Pharmaceuticals technology area. These actions are distributed across 8 distinct examiners and 7 distinct art units. This number of examiners relative to the 8 pending office actions indicates a decentralized prosecution landscape where nearly every case is handled by a different individual. The involvement of 7 distinct art units further suggests that the portfolio spans a wide range of technical sub-specialties.

LIPPERT, JOHN WILLIAM is the busiest examiner, currently handling 1 pending office action. Because there are 8 pending office actions in total, the workload is spread across the 8 distinct examiners. This lack of concentration means that no single examiner has a dominant influence over the portfolio. Practitioners must prepare for a diverse array of examiner styles, as the 7 distinct art units will likely apply varying standards of review to the Biotechnology & Pharmaceuticals subject matter.

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

Portfolio Summary

8
Total Pending OAs
5
Non-Final OAs
3
Final Rejections
0
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.

2
Overdue
0
Due this week
0
Due this month
4
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 (2)Due ≤ 60 days (4)

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.

3
Hard (38%)
4
Medium (50%)
0
Easy (0%)
1
Unknown (12%)

Rejection Statute Mix

BucketCases
§101 + other2 (25%)
§103 only3 (38%)
Double-patenting + other1 (12%)
Multi-statute (no §101)1 (12%)
No statute on record1 (12%)

Industry Mix

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

7
Life Sciences
88% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
1
Business / Other
12% 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.

80 h
Manual time on pending OAs
16 h
Time saved (low, 20%)
28 h
Time saved (mid, 35%)
0.7 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
LIPPERT, JOHN WILLIAM 1 58.2% +40.0%
BATES, KEENAN ALEXANDER 1 45.5% +79.5%
HASTINGS, ALISON AZAR 1 63.5% +40.2%
YU, DELPHINUS DOU YI 1 33.3% +0.0%
LIPPOLIS, ALEXANDRA ROSE 1 46.9% +59.0%
LAFAVE, ELIZABETH ROSE 1 62.5% +45.4%
OUSPENSKI, ILIA I 1 77.5% +20.4%
SULLIVAN, STEPHANIE LAUREN 1 58.1% +40.9%

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18418855 VECTOR FOR CANCER TREATMENT BATES, KEENAN ALEXANDER 92d overdue
17911184 Optimised Methods for Cleavage of Target Sequences LIPPOLIS, ALEXANDRA ROSE 34d
18254324 MEDIATORS OF GENE SILENCING YU, DELPHINUS DOU YI 56d

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
18418855 VECTOR FOR CANCER TREATMENT BATES, KEENAN ALEXANDER 92d overdue
17609691 MEDIATORS OF GENE SILENCING SULLIVAN, STEPHANIE LAUREN 8d overdue
17911184 Optimised Methods for Cleavage of Target Sequences LIPPOLIS, ALEXANDRA ROSE 34d
17781650 SPATIAL BARCODING LAFAVE, ELIZABETH ROSE 40d
17706028 ANTI CD25 FC GAMMA RECEPTOR BISPECIFIC ANTIBODIES FOR TUMOR SPECIFIC CELL DEPLETION OUSPENSKI, ILIA I 57d
18682398 DIPHOSPHINE COMPOUNDS AND COMPLEXES LIPPERT, JOHN WILLIAM —
18265063 Aldehyde Dehydrogenase Inhibitors and Their Therapeutic Use HASTINGS, ALISON AZAR —

Top Art Units

Art UnitApps
1631 1
1627 1
1636 1
1637 1
1684 1
1644 1
1635 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18682398 DIPHOSPHINE COMPOUNDS AND COMPLEXES LIPPERT, JOHN WILLIAM — §103 Non-Final OA — Pending Feb 08, 2024
18418855 VECTOR FOR CANCER TREATMENT BATES, KEENAN ALEXANDER 1631 §103§112 Final Rejection 92d overdue Pending Jan 22, 2024
18265063 Aldehyde Dehydrogenase Inhibitors and Their Therapeutic Use HASTINGS, ALISON AZAR 1627 §103 Non-Final OA — Pending Jun 02, 2023
18254324 MEDIATORS OF GENE SILENCING YU, DELPHINUS DOU YI 1636 §101§102§112Other Non-Final OA 56d Pending May 24, 2023
17911184 Optimised Methods for Cleavage of Target Sequences LIPPOLIS, ALEXANDRA ROSE 1637 §101§102 Non-Final OA 34d Pending Sep 13, 2022
17781650 SPATIAL BARCODING LAFAVE, ELIZABETH ROSE 1684 §103 Non-Final OA 40d Pending Jun 01, 2022
17706028 ANTI CD25 FC GAMMA RECEPTOR BISPECIFIC ANTIBODIES FOR TUMOR SPECIFIC CELL DEPLETION OUSPENSKI, ILIA I 1644 Other Final Rejection 57d Pending Mar 28, 2022
17609691 MEDIATORS OF GENE SILENCING SULLIVAN, STEPHANIE LAUREN 1635 §112DP Final Rejection 8d overdue Pending Nov 08, 2021

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