Prosecution Insights
Last updated: August 16, 2026

Chugai Seiyaku Kabushiki Kaisha

39 pending office actions • 18 art units • 32 examiners • 0 of 39 (0%) have an AI response strategy ready • 48 patents granted in the last 365 days

Portfolio Summary

39
Total Pending OAs
20
Non-Final OAs
17
Final Rejections
2
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 15 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

13
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. 15 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (13)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.

11
Hard (28%)
13
Medium (33%)
15
Easy (38%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other3 (8%)
§103 only8 (21%)
§112 only12 (31%)
Double-patenting only3 (8%)
Double-patenting + other5 (13%)
Multi-statute (no §101)8 (21%)

Industry Mix

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

35
Life Sciences
90% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
3% of docket
3
Business / Other
8% 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.

390 h
Manual time on pending OAs
78 h
Time saved (low, 20%)
136 h
Time saved (mid, 35%)
3.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
MIDDLETON, DANAYA L 3 46.1% +54.1%
SANG, HONG 3 54.7% +62.6%
HABTE, KAHSAY 2 85.0% +7.4%
BEANE, RANDALL L 2 32.8% +36.6%
PATTERSON, SARAH COOPER 2 58.3% +56.5%
GEMBEH, SHIRLEY V 1 63.1% +33.8%
KIEFER, DALTON EDWARD 1
CHEN, PO-CHIH 1 74.3% +14.4%
LANDSMAN, ROBERT S 1 81.3% +13.3%
WILLIS, DOUGLAS M 1 82.4% +19.5%

Quick Wins (3)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18726155 NITROGEN-CONTAINING HETEROCYCLIC COMPOUND HAVING NRF2 ACTIVATION EFFECT HABTE, KAHSAY
18579949 METHOD FOR PRODUCING ARYLAMIDE DERIVATIVE HABTE, KAHSAY
18289627 ANTI-DDR2 ANTIBODIES AND USES THEREOF LANDSMAN, ROBERT S

Hard Cases (11)

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
17716467 ANTIGEN-BINDING MOLECULE FOR PROMOTING CLEARANCE FROM PLASMA OF ANTIGEN COMPRISING SUGAR CHAIN RECEPTOR-BINDING DOMAIN LI, RUIXIANG 73d overdue
18266665 METHOD FOR MEASURING RELATIVE fu RATIO BY DYNAMIC ANALYSIS NGUYEN, NAM P 44d overdue
15734755 ANTIGEN-BINDING MOLECULE SHOWING CHANGED HALF-LIFE IN CYTOPLASM CHASE, CAROL ANN 31d overdue
17926673 IMPROVED GRANZYME B VARIANT PATTERSON, SARAH COOPER 11d overdue
18458292 THERAPEUTIC AGENT FOR CANCER OF PATIENT WITH DECREASE IN RB1 FUNCTION USING MYT1 INHIBITOR AND CHEMOTHERAPEUTIC AGENT IN COMBINATION, AND TREATMENT METHOD THEREOF WILLIS, DOUGLAS M 9d overdue
17766280 INHIBITOR OF CELL PROLIFERATION IN OBINUTUZUMAB RESISTANT CD20-POSITIVE CANCER, AND MEDICINAL COMPOSITION, MEDICINE, PRODUCTION, METHOD FOR INHIBITING CELL PROLIFERATION, THERAPEUTIC METHOD, TYPE II ANTI-CD20 ANTIBODY, COMPOUNDS, COMBINATION OF SAME, ENHANCER AND INDUCER, EACH RELATING THERETO SANG, HONG 29d
18270793 METHOD FOR ALKYLATING ACIDIC FUNCTIONAL GROUP BAHTA, MEDHANIT W
18268399 MEDICINE PRODUCTION METHOD INCLUDING STEP OF FREEZE-DRYING WITH MIXED SOLVENT BEANE, RANDALL L

Interview Candidates (14)

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
17144342 ANTIGEN-BINDING MOLECULE FOR ELIMINATING AGGREGATED ANTIGENS SANG, HONG 53d overdue
17926673 IMPROVED GRANZYME B VARIANT PATTERSON, SARAH COOPER 11d overdue
18458292 THERAPEUTIC AGENT FOR CANCER OF PATIENT WITH DECREASE IN RB1 FUNCTION USING MYT1 INHIBITOR AND CHEMOTHERAPEUTIC AGENT IN COMBINATION, AND TREATMENT METHOD THEREOF WILLIS, DOUGLAS M 9d overdue
17766280 INHIBITOR OF CELL PROLIFERATION IN OBINUTUZUMAB RESISTANT CD20-POSITIVE CANCER, AND MEDICINAL COMPOSITION, MEDICINE, PRODUCTION, METHOD FOR INHIBITING CELL PROLIFERATION, THERAPEUTIC METHOD, TYPE II ANTI-CD20 ANTIBODY, COMPOUNDS, COMBINATION OF SAME, ENHANCER AND INDUCER, EACH RELATING THERETO SANG, HONG 29d
18827277 AMORPHOUS FORM OF TETRACYCLIC COMPOUND GEMBEH, SHIRLEY V
18580385 PROTEASE-MEDIATED TARGET SPECIFIC CYTOKINE DELIVERY USING FUSION POLYPEPTIDE MIDDLETON, DANAYA L
18535310 CYTOTOXICITY-INDUCING THERAPEUTIC AGENT SANG, HONG
18567432 METHOD FOR PRODUCING DIHYDROPYRIDAZINE-3,5-DIONE DERIVATIVE CHEN, PO-CHIH

Top Art Units

Art UnitApps
1654 4
1641 4
1643 4
1624 3
1674 3
1675 3
1646 3
1658 2
1652 1
1621 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18827277 AMORPHOUS FORM OF TETRACYCLIC COMPOUND GEMBEH, SHIRLEY V §103DP Non-Final OA Pending Sep 06, 2024
18726155 NITROGEN-CONTAINING HETEROCYCLIC COMPOUND HAVING NRF2 ACTIVATION EFFECT HABTE, KAHSAY 1624 DP Non-Final OA Pending Jul 02, 2024
18724369 POLYPEPTIDE AND METHOD FOR PRODUCING AMINO ACID USING SAME KIEFER, DALTON EDWARD 1652 §112 Non-Final OA Pending Jun 26, 2024
18580385 PROTEASE-MEDIATED TARGET SPECIFIC CYTOKINE DELIVERY USING FUSION POLYPEPTIDE MIDDLETON, DANAYA L §102§112DP Non-Final OA Pending Jan 18, 2024
18579949 METHOD FOR PRODUCING ARYLAMIDE DERIVATIVE HABTE, KAHSAY 1624 §112 Non-Final OA Pending Jan 17, 2024
18535310 CYTOTOXICITY-INDUCING THERAPEUTIC AGENT SANG, HONG §103 Non-Final OA Pending Dec 11, 2023
18567432 METHOD FOR PRODUCING DIHYDROPYRIDAZINE-3,5-DIONE DERIVATIVE CHEN, PO-CHIH 1621 §112 Non-Final OA Pending Dec 06, 2023
18289627 ANTI-DDR2 ANTIBODIES AND USES THEREOF LANDSMAN, ROBERT S 1647 §103 Non-Final OA Pending Nov 06, 2023
18458292 THERAPEUTIC AGENT FOR CANCER OF PATIENT WITH DECREASE IN RB1 FUNCTION USING MYT1 INHIBITOR AND CHEMOTHERAPEUTIC AGENT IN COMBINATION, AND TREATMENT METHOD THEREOF WILLIS, DOUGLAS M 1624 §103§112 Non-Final OA 9d overdue Pending Aug 30, 2023
18270793 METHOD FOR ALKYLATING ACIDIC FUNCTIONAL GROUP BAHTA, MEDHANIT W 1692 §102§103 Non-Final OA Pending Jul 03, 2023
18268737 METHOD FOR PRODUCING PEPTIDE COMPOUND CONTAINING N-SUBSTITUTED-AMINO ACID RESIDUE BOWLES, DAVID PAUL 1654 §102§103§112DP Non-Final OA Pending Jun 21, 2023
18268399 MEDICINE PRODUCTION METHOD INCLUDING STEP OF FREEZE-DRYING WITH MIXED SOLVENT BEANE, RANDALL L 1654 §102§103§112 Non-Final OA Pending Jun 20, 2023
18268470 METHOD FOR SCREENING FOR CANDIDATE MOLECULE CAPABLE OF FORMING COMPLEX IN CONJUNCTION WITH PLURALITY OF TARGET MOLECULES PHAM, KHAI QUYNH TIEN 1684 §103 Final Rejection Pending Jun 20, 2023
18266665 METHOD FOR MEASURING RELATIVE fu RATIO BY DYNAMIC ANALYSIS NGUYEN, NAM P 1678 §102§103 Final Rejection 44d overdue Pending Jun 12, 2023
18034424 PEPTIDE SYNTHESIS METHOD FOR SUPPRESSING DEFECT CAUSED BY DIKETOPIPERAZINE FORMATION BEANE, RANDALL L 1654 §102§103§112DPOther Non-Final OA Pending Apr 28, 2023
18250507 SYRINGE IGEL JR, MARK ALAN 3783 §103 Final Rejection Pending Apr 25, 2023
18298743 METHOD FOR ALTERING PLASMA RETENTION AND IMMUNOGENICITY OF ANTIGEN-BINDING MOLECULE HUYNH, PHUONG N 1641 §112 Non-Final OA Pending Apr 11, 2023
18023038 HETERODIMER FC POLYPEPTIDE MIDDLETON, DANAYA L 1674 §101§102§112DP Final Rejection Pending Feb 24, 2023
18022342 HETERODIMER FC POLYPEPTIDE MIDDLETON, DANAYA L 1674 DP Final Rejection Pending Feb 21, 2023
18018460 METHOD FOR MEASURING PHARMACOKINETICS OF AGENT LABELED WITH NON-RADIOACTIVE SUBSTANCE XU, XIAOYUN 1797 §103 Final Rejection Pending Jan 27, 2023
17928759 EFFICIENT PEPTIDE CONDENSATION METHOD FOR DIFFICULT SEQUENCES NIEBAUER, RONALD T 1658 §103§112 Final Rejection Pending Nov 30, 2022
17992032 METHOD FOR SEARCHING AND SCREENING FOR TARGET OF ANTI-CANCER AGENT USING NON-HUMAN ANIMAL MODEL HAVING NOG ESTABLISHED CANCER CELL LINE TRANSPLANTED THEREIN BEHARRY, ZANNA MARIA 1632 §103 Non-Final OA 91d overdue Pending Nov 22, 2022
17926673 IMPROVED GRANZYME B VARIANT PATTERSON, SARAH COOPER 1675 §101§102§103§112 Non-Final OA 11d overdue Pending Nov 21, 2022
17914432 METHOD FOR PRODUCING MULTISPECIFIC ANTIGEN-BINDING MOLECULES BRISTOL, LYNN ANNE 1643 §112 Non-Final OA 9d overdue Pending Sep 26, 2022
17798686 ANTI-CD137 ANTIGEN-BINDING MOLECULE FOR USE IN CANCER TREATMENT DONOGHUE, BRITTNEY ERIN 1675 §103§112DP Final Rejection Pending Aug 10, 2022
17797540 METHODS FOR PRODUCING AND/OR ENRICHING RECOMBINANT ANTIGEN-BINDING MOLECULES ROONEY, NORA MAUREEN 1641 §112 Final Rejection 28d overdue Pending Aug 04, 2022
17788506 METHOD FOR SYNTHESIZING PEPTIDE COMPOUND REYNOLDS, FRED H 1658 §103 Final Rejection 44d overdue Pending Jun 23, 2022
17716467 ANTIGEN-BINDING MOLECULE FOR PROMOTING CLEARANCE FROM PLASMA OF ANTIGEN COMPRISING SUGAR CHAIN RECEPTOR-BINDING DOMAIN LI, RUIXIANG 1674 §101§102§103§112 Non-Final OA 73d overdue Pending Apr 08, 2022
17766280 INHIBITOR OF CELL PROLIFERATION IN OBINUTUZUMAB RESISTANT CD20-POSITIVE CANCER, AND MEDICINAL COMPOSITION, MEDICINE, PRODUCTION, METHOD FOR INHIBITING CELL PROLIFERATION, THERAPEUTIC METHOD, TYPE II ANTI-CD20 ANTIBODY, COMPOUNDS, COMBINATION OF SAME, ENHANCER AND INDUCER, EACH RELATING THERETO SANG, HONG 1646 §102§103§112 Final Rejection 29d Pending Apr 04, 2022
17587465 MOLECULE SPECIFICALLY ACTING IN A TISSUE WHERE A CELL DEATH IS BEING OBSERVED PATTERSON, SARAH COOPER 1675 §112 Final Rejection Pending Jan 28, 2022
17625868 ANTI-MUTATION TYPE FGFR3 ANTIBODY AND USE THEREFOR CUNNINGCHEN, KATHLEEN MARY 1600 §112 Non-Final OA Pending Jan 10, 2022
17621746 ANTIGEN BINDING MOLECULES THAT BIND PDGF-B AND PDGF-D AND USES THEREOF HOPKINS, SAMANTHA LAKE 1641 §103 Non-Final OA 62d Pending Dec 22, 2021
17438993 ANTIGEN-BINDING MOLECULE CONTAINING ANTIGEN-BINDING DOMAIN OF WHICH BINDING ACTIVITY TO ANTIGEN IS CHANGED DEPENDING ON MTA, AND LIBRARY FOR OBTAINING SAID ANTIGEN-BINDING DOMAIN SKOKO III, JOHN JOSEPH 1643 §112 Non-Final OA 114d overdue Pending Sep 14, 2021
17437448 ANTI-IL-6 RECEPTOR ANTIBODY-CONTAINING INHIBITOR FOR INHIBITING DETERIORATION OF BBB FUNCTION DAHLE, CHUN WU 1641 §103§112 Non-Final OA Pending Sep 09, 2021
17290439 HER2 S310F SPECIFIC ANTIGEN-BINDING MOLECULES FAUST, AMBER KATHLEEN 1643 §112 Final Rejection 29d overdue Pending Apr 30, 2021
17144342 ANTIGEN-BINDING MOLECULE FOR ELIMINATING AGGREGATED ANTIGENS SANG, HONG 1646 §112 Final Rejection 53d overdue Pending Jan 08, 2021
15734755 ANTIGEN-BINDING MOLECULE SHOWING CHANGED HALF-LIFE IN CYTOPLASM CHASE, CAROL ANN 1646 §103§112 Final Rejection 31d overdue Pending Dec 03, 2020
17058896 LIGAND-BINDING MOLECULE CONTAINING SINGLE DOMAIN ANTIBODY EDGINGTONGIORDANO, FRANCESCA 1643 DP Final Rejection 38d overdue Pending Nov 25, 2020
16081522 PRODUCTION METHOD FOR NONCYCLIC PEPTIDE-NUCLEIC ACID COMPLEX HAVING, AT N-TERMINAL, AMINO ACID WITH THIOL GROUP NEAR AMINO GROUP, LIBRARY THEREOF, AND CYCLIC PEPTIDE-NUCLEIC ACID COMPLEX LIBRARY DERIVED FROM SAME AUDET, MAURY A 1654 §112 Final Rejection Pending Jul 08, 2019

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