Prosecution Insights
Last updated: May 29, 2026

Klarquist Sparkman, LLP (Viacyte, Inc.)

6 pending office actions • 2 clients • 6 examiners • 6 art units • 0 of 6 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days

Portfolio Summary

6
Total Pending OAs
5
Non-Final OAs
1
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.

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.

0
Hard (0%)
4
Medium (67%)
1
Easy (17%)
1
Unknown (17%)

Rejection Statute Mix

BucketCases
§103 only2 (33%)
§102 only1 (17%)
§112 only1 (17%)
Double-patenting + other1 (17%)
No statute on record1 (17%)

Industry Mix

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

6
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% 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.

60 h
Manual time on pending OAs
12 h
Time saved (low, 20%)
21 h
Time saved (mid, 35%)
0.5 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
DICKINSON, PAUL W 1 63.0% +9.5%
CORDAS, EMILY ANN 1 50.6% +58.5%
CRAIGO, WILLIAM A 1 49.3% +38.7%
ROGERS, ERIC JASON 1 59.2% +28.6%
BATES, KEENAN ALEXANDER 1 46.3% +70.8%
NGUYEN, NGHI V 1 53.6% +50.4%

Interview Candidates (5)

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 5 ordered by deadline are shown.

App #TitleExaminerDue in
18138904 ENCAPSULATION OF PANCREATIC CELLS DERIVED FROM HUMAN PLURIPOTENT STEM CELLS CRAIGO, WILLIAM A 105d overdue
17560680 ENHANCED DIFFERENTIATION OF BETA CELLS NGUYEN, NGHI V 86d overdue
17669874 PANCREATIC DIFFERENTIATION BATES, KEENAN ALEXANDER 37d overdue
18018787 IN VITRO DIFFERENTIATION OF PANCREATIC ENDOCRINE CELLS ROGERS, ERIC JASON 28d
18281154 STEM CELL DIFFERENTIATION AND POLYMERS CORDAS, EMILY ANN 71d

Client Portfolio (2 clients)

Client (Assignee)Pending OAs
Vertex 5
ViaCyte, Inc. 1

Top Art Units

Art UnitApps
16181
16321
16151
16381
16311
16531

Pending Office Actions

App #TitleClientExaminerArt UnitStatutesStatusDue inAIFiled
18647137 STEM CELL DERIVED PANCREATIC ISLET DIFFERENTIATION Vertex Pharmaceuticals Incorporated DICKINSON, PAUL W 1618 §103 Non-Final OA 26d overdue Pending Apr 26, 2024
18281154 STEM CELL DIFFERENTIATION AND POLYMERS Vertex Pharmaceuticals Incorporated CORDAS, EMILY ANN 1632 DPOther Non-Final OA 71d Pending Sep 08, 2023
18138904 ENCAPSULATION OF PANCREATIC CELLS DERIVED FROM HUMAN PLURIPOTENT STEM CELLS Viacyte, Inc. CRAIGO, WILLIAM A 1615 Other Non-Final OA 105d overdue Pending Apr 25, 2023
18018787 IN VITRO DIFFERENTIATION OF PANCREATIC ENDOCRINE CELLS Vertex Pharmaceuticals Incorporated ROGERS, ERIC JASON 1638 §102 Non-Final OA 28d Pending Jan 30, 2023
17669874 PANCREATIC DIFFERENTIATION Vertex Pharmaceuticals Incorporated BATES, KEENAN ALEXANDER 1631 §112 Final Rejection 37d overdue Pending Feb 11, 2022
17560680 ENHANCED DIFFERENTIATION OF BETA CELLS Vertex Pharmaceuticals Incorporated NGUYEN, NGHI V 1653 §103 Non-Final OA 86d overdue Pending Dec 23, 2021

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