Prosecution Insights
Last updated: April 19, 2026

Eisai R&D Management Co. Ltd.

13 pending office actions

Portfolio Summary

13
Total Pending OAs
7
Final Rejections
6
Non-Final OAs

Pending Office Actions

App #TitleExaminerArt UnitStatusFiled
18035091 METHOD OF TREATING BREAST CANCER FETTEROLF, BRANDON J 1626 Final Rejection May 02, 2023
18030207 PHARMACEUTICAL COMPOSITION FOR TREATING TUMORS LADD, CAROLYN LOUISE 1622 Non-Final OA Apr 04, 2023
18188716 EZH2 INHIBITORS FOR TREATING LYMPHOMA SIMMONS, CHRIS E 1622 Non-Final OA Mar 23, 2023
18028039 PHARMACEUTICAL COMPOSITION ROONEY, NORA MAUREEN 1641 Non-Final OA Mar 23, 2023
18188249 APICOMPLEXAN PARASITE INHIBITION BREDEFELD, RACHAEL EVA 3786 Final Rejection Mar 22, 2023
18027413 ANTI-EPHA4 ANTIBODY LANDSMAN, ROBERT S 1647 Non-Final OA Mar 21, 2023
18008304 THERAPEUTIC AGENT FOR BREAST CANCER FETTEROLF, BRANDON J 1626 Final Rejection Dec 05, 2022
18058441 SYNTHESIS OF HALICHONDRINS OH, TAYLOR V 1625 Non-Final OA Nov 23, 2022
17911040 TABLET, MEDICINE, METHODS FOR PRODUCING THESE, AND KIT TRAN, SUSAN T 1615 Non-Final OA Sep 12, 2022
17757825 METHOD FOR PRODUCING ERIBULIN-BASED ANTIBODY-DRUG CONJUGATE BUTTICE, AUDREY L 1647 Final Rejection Jun 21, 2022
17787752 DRUG SUBSTANCE OF LEMBOREXANT AND MEDICINAL COMPOSITION COMPRISING SAME PIPIC, ALMA 1617 Final Rejection Jun 21, 2022
17757672 USE OF LEMBOREXANT FOR TREATING INSOMNIA MOU, LIYUAN 1628 Final Rejection Jun 17, 2022
17443650 METHODS OF TREATING CIRCADIAN RHYTHM SLEEP DISORDERS JAVANMARD, SAHAR 1622 Final Rejection Jul 27, 2021

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