Prosecution Insights
Last updated: April 19, 2026

Proskauer Rose LLP

31 pending office actions • 18 clients

Portfolio Summary

31
Total Pending OAs
7
Final Rejections
24
Non-Final OAs

Client Portfolio (18 clients)

Client (Assignee)Pending OAs
Ipsen Biopharm Limited 9
Praeventix, LLC 4
VISTERRA, INC. 2
Ipsen Biopharm Limited 2
Kiniksa Pharmaceuticals GmbH 1
Innocare Pharma Inc. 1
Paragon Therapeutics, Inc. 1
Viridian Therapeutics, Inc. 1
Hangzhou Polymed Biopharmaceuticals, Inc. 1
Ipsen Biopharm Limited 1
Theseus Pharmaceuticals, Inc. 1
Kisoji Biotechnology Inc. 1
VISTERRA, INC. 1
Otsuka Pharmaceutical Co., Ltd. 1
11584022 Canada Inc. 1
Band Therapeutics, LLC 1
Xencor, Inc. 1
Kisoji Biotechnology Inc. 1

Pending Office Actions

App #TitleClientExaminerArt UnitStatusFiled
19394710 Untitled Kiniksa Pharmaceuticals GmbH JONES, DAMERON LEVEST 1618 Non-Final OA
19342035 Untitled Ipsen Biopharm Limited OGUNBIYI, OLUWATOSIN A 1645 Non-Final OA
19390312 Untitled Praeventix, LLC MCDOWELL, BRIAN E 1624 Non-Final OA
19390298 Untitled Praeventix, LLC MCDOWELL, BRIAN E 1624 Non-Final OA
19405049 Untitled Innocare Pharma Inc. MCMILLIAN, KARA RENITA 1623 Non-Final OA
19297947 Untitled Paragon Therapeutics, Inc. DAHLE, CHUN WU 1641 Non-Final OA
19242715 COMPOSITIONS AND METHODS FOR TREATMENT OF THYROID EYE DISEASE Viridian Therapeutics, Inc. BRISTOL, LYNN ANNE 1643 Non-Final OA Jun 18, 2025
19086136 FIVE-MEMBERED-FUSED SIX-MEMBERED COMPOUND, PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE Hangzhou Polymed Biopharmaceuticals, Inc. MOU, LIYUAN 1628 Final Rejection Mar 21, 2025
18711074 TREATMENT OF PAIN Ipsen Biopharm Limited OGUNBIYI, OLUWATOSIN A 1645 Non-Final OA May 16, 2024
18711047 TREATMENT OF VISCERAL PAIN Ipsen Biopharm Limited GRASER, JENNIFER E 1645 Non-Final OA May 16, 2024
18690479 Modified Bont/A for Use in the Treatment of a Disorder Affecting an Eyelid Muscle of a Subject Ipsen Biopharm Limited SWIFT, CANDICE LEE 1657 Non-Final OA Mar 08, 2024
18506625 MACROCYCLIC COMPOUNDS AND USES THEREOF Theseus Pharmaceuticals, Inc. SHOWALTER, ALEXANDER KEITH 1629 Non-Final OA Nov 10, 2023
18552788 TREATMENT OF PAIN & INFLAMMATORY DISORDERS Ipsen Biopharm Limited HIBBERT, CATHERINE S 1658 Non-Final OA Sep 27, 2023
18552599 Clostridial Neurotoxins Comprising an Exogenous Activation Loop Ipsen Biopharm Limited BREEN, KIMBERLY CATHERINE 1657 Non-Final OA Sep 26, 2023
18283579 BINDING AGENTS TARGETING TUMORS AND/OR IMMUNE CELLS Kisoji Biotechnology Inc. DUFFY, BRADLEY 1643 Non-Final OA Sep 22, 2023
18470726 TREATMENT OF COMPLEMENT MEDIATED DISEASES AND DISORDERS WITH C3B ANTIBODIES VISTERRA, INC. STONEBRAKER, ALYSSA RAE 1642 Non-Final OA Sep 20, 2023
18466911 PD-1 AGONIST ANTIBODIES Otsuka Pharmaceutical Co., Ltd. DONOGHUE, BRITTNEY ERIN 1675 Non-Final OA Sep 14, 2023
18549871 MODIFIED CLOSTRIDIAL NEUROTOXINS Ipsen Biopharm Limited DUFFY, PATRICIA ANN 1645 Non-Final OA Sep 08, 2023
18258914 HOMOGENEOUS BIOPOLYMER SUSPENSIONS, PROCESSES FOR MAKING SAME AND USES THEREOF 11584022 Canada Inc. BABSON, NICOLE PLOURDE 1619 Non-Final OA Jun 22, 2023
18253975 COMPOSITIONS AND METHODS FOR TREATMENT OF BLEEDING DISORDERS Band Therapeutics, LLC NOAKES, SUZANNE MARIE 1656 Non-Final OA May 23, 2023
18248030 BIOMARKERS, METHODS, AND COMPOSITIONS FOR TREATING AUTOIMMUNE DISEASE INCLUDING SYSTEMIC LUPUS ERYTHEMATOUS (SLE) Xencor, Inc. DAHLE, CHUN WU 1641 Non-Final OA Apr 05, 2023
18167529 METHODS OF USING INTERLEUKIN-2 AGENTS VISTERRA, INC. CHATTIN, AMY MARIE 1643 Final Rejection Feb 10, 2023
18150075 COMPOSITION COMPRISING RECOMBINANT CLOSTRIDIUM NEUROTOXIN Ipsen Biopharm Limited IANNUZO, NATALIE NMN 1653 Final Rejection Jan 04, 2023
17786708 POLYPEPTIDES, PROTEIN COMPLEXES AND METHOD FOR MAKING SAME Kisoji Biotechnology Inc. BRISTOL, LYNN ANNE 1643 Non-Final OA Dec 20, 2022
18052131 IMMUNOSILENCING Fc VARIANTS VISTERRA, INC. YOUTCHOM PENDIE, EMMANUEL LED 1647 Final Rejection Nov 02, 2022
17911503 Treatment of Upper Facial Lines Ipsen Biopharm Limited DEVI, SARVAMANGALA 1645 Non-Final OA Sep 14, 2022
17759674 TREATMENT OF SKIN CONDITIONS Ipsen Biopharm Limited DAVIS, RUTH A 1699 Final Rejection Jul 28, 2022
17812800 Methods for the Manufacture of Proteolytically Processed Polypeptides Ipsen Biopharm Limited KOLKER, DANIEL E 1645 Non-Final OA Jul 15, 2022
17776533 NOVEL FUNCTIONALIZED LACTAMS AS MODULATORS OF THE 5-HYDROXYTRYPTAMINE RECEPTOR 7 AND THEIR METHOD OF USE Praeventix, LLC RICCI, CRAIG D 1611 Final Rejection May 12, 2022
17776531 NOVEL FUNCTIONALIZED LACTONES AS MODULATORS OF THE 5-HYDROXYTRYPTAMINE RECEPTOR 7 AND THEIR METHOD OF USE Praeventix, LLC ANDERSON, REBECCA L 1626 Final Rejection May 12, 2022
17754216 TREATMENT OF NEUROLOGICAL DISORDERS Ipsen Biopharm Limited CHOWDHURY, IQBAL HOSSAIN 1656 Non-Final OA Mar 28, 2022

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