Prosecution Insights
Last updated: October 25, 2026

Calliditas Therapeutics AB

Technology area: Biotechnology & Pharmaceuticals

4 pending office actions • 2 art units • 1 examiners • 0 of 4 (0%) have an AI response strategy ready

Analysis

Calliditas Therapeutics AB has 4 pending office actions in the Biotechnology & Pharmaceuticals technology area. Remarkably, all 4 of these actions are assigned to a single examiner, ANTHOPOLOS, PETER. Despite this concentration of personnel, the matters are split between 2 distinct art units.

ANTHOPOLOS, PETER is the busiest examiner, holding all 4 pending office actions. This concentration with 1 distinct examiner is highly unusual and provides a unique opportunity for practitioners to develop a very focused relationship and strategy with this individual. While the 4 pending office actions are in 2 distinct art units, the fact that a single examiner is reviewing all of them allows for a highly consistent advocacy approach across the company's current active portfolio. Success with the 1 distinct examiner will largely determine the overall success of the company's current patenting efforts. The limited number of examiners allows for a very targeted and consistent advocacy approach. Practitioners can leverage insights gained from one application to inform the strategy for the others, as the 2 distinct art units likely share similar examination standards. This concentration is a significant advantage for maintaining a unified legal front across the 4 pending office actions.

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

Portfolio Summary

4
Total Pending OAs
2
Non-Final OAs
2
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
0
Due later

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 (75%)
0
Medium (0%)
1
Easy (25%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§112 only1 (25%)
Multi-statute (no §101)3 (75%)

Industry Mix

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

4
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.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ANTHOPOLOS, PETER 4 57.4% +58.6%

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
19303799 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 51d overdue
19194972 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER —
18352811 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER —

Interview Candidates (4)

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 4 ordered by deadline are shown.

App #TitleExaminerDue in
19303799 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 51d overdue
19304103 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER —
19194972 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER —
18352811 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER —

Top Art Units

Art UnitApps
1611 3
1600 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19303799 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 1611 §103§112 Final Rejection 51d overdue Pending Aug 19, 2025
19304103 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 1611 §112 Non-Final OA — Pending Aug 19, 2025
19194972 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 1611 §103§112 Final Rejection — Pending Apr 30, 2025
18352811 PHARMACEUTICAL COMPOSITIONS ANTHOPOLOS, PETER 1600 §103§112 Non-Final OA — Pending Jul 14, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Calliditas Therapeutics AB have?

Calliditas Therapeutics AB has 4 pending office actions as of October 2026, spread across 2 art units and 1 examiners.

Which USPTO examiner handles the most Calliditas Therapeutics AB applications?

Peter Anthopolos has the most, with 4 of Calliditas Therapeutics AB's pending office actions.

What technology area are Calliditas Therapeutics AB's patent applications in?

Mostly Biotechnology & Pharmaceuticals (USPTO Tech Center 1600), based on where its pending office actions are examined.

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