Xencor, Inc. vs. Merus N.V.

Explore the PTAB proceeding IPR2025-00604 filed by Xencor, Inc. on 2025-02-11. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00604

Filing Date

2025-02-11

Accorded Filing Date

2025-02-11

Institution Decision Date

2025-09-26

Last Modified Date

2026-07-09

Proceeding Type

IPR

Termination Date

2026-07-09

Trial Status

Terminated-Settled

Parties & Counsel

Petitioner

Xencor, Inc.

Represented By

Modi, Naveenet al

Patent Owner / Respondent

Merus N.V.

Represented By

Holland, Elizabethet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1600 - Biotechnology & Organic Chemistry

Patent Information

1 Patent Involved

Respondent Application Number 14081848

Respondent Patent Number 9358286

External Links

Espacenet

Google Patents

Respondent Inventor Cornelis A. DE KRUIF et al

Respondent Tech Center TC 1600 - Biotechnology & Organic Chemistry

Address and Attorney/Agent Information

145 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name STERNE, KESSLER, GOLDSTEIN & FOX P.L.L.C.

Customer Number 26111

Address 1101 K Street, NW, 10th Floor, WASHINGTON, DC, 20005, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
28912	Robert Sterne	202-772-8555
29021	Jorge Goldstein	202-371-2600
32831	Tracy-Gene Durkin	202-371-2600
33876	Donald Featherstone	202-772-8629
33997	Michael Ray	202-772-8569
34368	Randy Lacasse	202-772-8678
34395	Robert Millonig	202-371-2600
35239	Michael Lee	703-628-0233
36013	Robert Sokohl	202-371-2600
36351	Karen Markowicz	202-772-8637
36688	Eric Steffe	202-371-8625
38759	John Covert	202-371-2600
39967	Eldora Ellison	202-772-8508
41306	Timothy Shea Jr	202-371-2600
42289	Donald Banowit	202-371-2600
43447	Jason Eisenberg	202-371-2600
44757	Jeffrey Helvey	202-772-8675
45871	Mark Rygiel	202-371-2600
45986	Peter Jackman	202-371-2600
47756	Gaby Longsworth	202-371-2600
48256	Pamela Mingo	202-371-2600
51802	James Hietala	202-772-8795
53812	Daniel Yonan	202-371-2600
54179	Michelle Holoubek	202-772-8855
54463	Michael Specht	202-371-2600
55440	Jennifer Chagnon	202-772-8890
56374	Ross Hicks	202-371-2600
57772	Lori Brandes	202-371-2600
57913	Paul Calvo	202-772-8846
58164	Kristina Kelly	202-776-5284
58403	Marsha Gillentine	202-772-8692
58770	Harish Ruchandani	--
58885	Matthew Bodenstein	202-772-8787
59244	Stephanie Elmer	202-371-2600
59425	Kyle Conklin	202-371-2600
60167	Scott Schaller	202-371-2600
60390	Richard Coller Iii	202-772-8764
60789	Cynthia Derenzo	+358-10-505-6847
60889	Salvador Bezos	202-772-8533
61205	David Holman	202-371-2600
61327	Jonathan Tuminaro	202-371-2600
61868	Dennies Varughese	202-772-8805
62732	Deborah Sterling	202-772-8501
63208	Christopher O'Brien	202-772-8680
63285	Joseph Mutschelknaus	202-371-2600
63504	Ralph Powers Iii	202-772-8876
63929	Jaume Canaves	202-371-2600
64228	Graham Phero	202-772-8860
64515	Daniel Gajewski	202-772-8774
64587	Syed Ahmed	847-289-5228
64974	Michael Gross Iii	202-772-8762
65021	Christian Camarce	202-772-8895
65172	Byron Pickard	202-371-2600
65211	Michael Malek	410-533-1922
65245	Richard Crudo	202-772-8575
65261	Evan Linderman	202-772-8915
65326	Olga Partington	202-772-8626
65367	Jason Fitzsimmons	202-772-8701
65457	Lauren Schleh	703-836-6400
65458	Robert Schmidt	202-772-8716
66568	Branka Bogunovic	202-772-8727
66638	Jeremiah Frueauf	202-772-8506
67254	Ryan Richardson	202-772-8729
67836	Bonnie Nannenga-Combs	202-371-2600
68395	Daniel Block	202-371-2600
68504	Ji Eun Kim	202-371-2600
68658	Richard Bemben	202-371-2600
68887	Amirali Sharifi	202-772-8871
69086	Daniel Bernard	202-371-2600
69105	Nirav Desai	202-371-2600
69199	Tyler Tassone	202-371-2600
69235	Karen Wong-Chan	202-772-8647
69836	Darrin Hopper	202-772-8630
70077	Shoshana Marvin	202-772-8850
70291	Christopher Gallo	202-371-2600
70307	Joshua Mccoy	202-772-8869
70524	Dohm Chankong	202-772-8529
70680	Sarah Leesman	202-371-2600
71185	Rebekah Holtz	202-772-8712
72039	Daniel Choo	202-371-2600
72126	Tyler Liu	202-772-8641
72314	Lestin Kenton Jr.	202-772-8594
72488	Yuke Wang	214-284-3876
72567	Todd Hopfinger	202-772-8696
72762	Bryan Hsu	202-772-8912
72780	Jessica Harrison	202-772-8901
72981	Trevor O'Neill	202-371-2600
73112	David Haars	202-371-2600
73287	Charles Hammond	202-772-8551
73707	Matthew Smith	202-772-8503
73784	Mark Arrington	202-772-8528
73904	Steven Pappas	202-772-8719
74017	Robert Niemeier	309-678-6806
74290	Ian Soule	202-772-8984
74533	Alexander Covington	202-772-8749
74612	Ivy Clarice Estoesta	202-772-8686
74992	John Higgins	202-783-6040
75034	Tyler Drye	202-772-8614
75069	Tyler Dutton	202-772-8982
75187	Timothy Tang	202-772-8758
75234	Rola Aylo	202-772-8810
75269	Roozbeh Gorgin	202-772-8667
75349	Brian Burke	202-772-8861
75455	Tiaotiao Anchondo	202-772-8804
76231	Todd Thurheimer	202-772-8863
76838	Joseph Venier	202-772-8785
76928	Hasina Ali	202-772-8978
76989	Lisa Ritchey	202-371-2600
77163	Randy Montgomery	202-371-2600
77546	Brian Dudley	216-647-1931
77776	Zhichun Zhang	202-772-8813
78359	Kelsey Pitts	202-772-1271
78365	Wenhao Xiong	202-772-8615
78508	Louis Panzica Jr.	202-772-8954
78921	Maria Briscione	202-772-8517
79290	Michael Webb	202-772-8834
79587	Kristofer Schroder	859-991-6529
79831	Christian Berrios	317-345-2233
79850	Paige Cloud	202-371-2600
79858	Matthew Metzger	202-772-8702
800005	Yangbeini Wang	202-772-883
80057	Ethan Goldschen	202-772-1296
80168	Benjamin Nagasing	202-772-8981
80713	Pengke Li	202-772-8602
80729	Masayuki Iino	202-772-8605
80938	Michael Nathanson	202-777-9644
81041	Xiaowei Jin	202-772-8752
81053	Carson Smith	202-772-1272
81060	Michael Guzzano	202-772-8646
81186	Adil Moghal	202-371-2600
81318	Pratibha Khanduri	202-772-8509
81485	Madeleine Bond	202-772-1299
81654	Payton Miles	202-772-1276
81975	Justin Wang	626-388-6351
82104	Maxwell Furigay	202-772-1281
82162	Reuben Moses	202-772-8664
82208	Sara Keeble	202-772-8560
82263	Hailey Mendenhall	202-772-8933
82382	Xinxiang Zhang	202-772-8621
82448	Kaci Kratch	512-517-8691
82703	Thomas Baraldi	202-772-1279
82896	Deepa Shiwcharan	202-772-1284
83022	Jean Selep	202-772-1270
83036	Nicholas Holdreith	202-772-8888
83174	Marc-Anthony Armand	202-772-1283

Proceeding Documents

107

Termination Decision: TERMINATION Due to Settlement After Institution of Trial 35 U.S.C. § 317; 37 C.F.R. §§ 42.72, 42.74 ORDER Granting Joint Motion to Keep Confidential and Separate 35 U.S.C. § 317(b); 35 C.F.R. § 42.74(c) TERMINATE

2026-07-09 FILING PARTY: BOARD

Download

Joint Motion to Keep Confidential and Separate MOTION

2026-07-07 FILING PARTY: PETITIONER

Download

Joint Motion to Terminate MOTION

2026-07-07 FILING PARTY: PETITIONER

Download

3002

Ex. 3002 Attorney Correspondence Exhibit

2026-06-17 FILING PARTY: BOARD

Download

Order: Modifying Order Setting Oral Argument ORDER

2026-06-17 FILING PARTY: BOARD

Download

Xencor, Inc. vs. Merus N.V.

Proceeding Overview

Parties & Counsel

Petitioner

Xencor, Inc.

Represented By

Patent Owner / Respondent

Merus N.V.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Termination Decision: TERMINATION Due to Settlement After Institution of Trial 35 U.S.C. § 317; 37 C.F.R. §§ 42.72, 42.74 ORDER Granting Joint Motion to Keep Confidential and Separate 35 U.S.C. § 317(b); 35 C.F.R. § 42.74(c) TERMINATE

Joint Motion to Keep Confidential and Separate MOTION

Joint Motion to Terminate MOTION

Ex. 3002 Attorney Correspondence Exhibit

Order: Modifying Order Setting Oral Argument ORDER

ORDER Setting Oral Argument 37 C.F.R. § 42.70 ORDER

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Argument OTHER

Patent Owner's Sur-Reply RESPONSE

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

Exhibit 1062 Exhibit

Petitioner's Current List of Exhibits NOTICE

IPR2025-00604 Power of Attorney NOTICE

IPR2025-00604 Dec. of Dan Margolis ISO admission PHV NOTICE

IPR2025-00604 Patent Owner Updated mandatory notice NOTICE

IPR2025-00604 Notice of Prov Recognized Attorney NOTICE

Petitioner's Notice of Deposition of Brian J. Sutton, Ph.D. NOTICE

1.20.2026_286 Patent Updated Mandatory Notices NOTICE

Petitioner's Objections to Patent Owner's Exhibits OTHER

IPR2025-00604 - EX2013 - Matthews (Presta Transcript Exhibit 4001) Exhibit

IPR2025-00604 - EX2020 - Kuby Exhibit

IPR2025-00604 - EX2014 - Presta Transcript Exhibit 4002 (Jin) Exhibit

IPR2025-00604 - EX2019 - Roitt Exhibit

IPR2025-00604 - EX2021 - Abbas Exhibit

IPR2025-00604 - EX2023 - Krapp Exhibit

IPR2025-00604 - Patent Owner's Motion To Submit Supplemental Information MOTION

IPR2025-00604 - EX2015 - Presta Transcript Exhibit 4003 (Keyt) Exhibit

IPR2025-00604 - EX2018 - The Structure of Antibodies - Porter Exhibit

IPR2025-00604 - EX2017 - Nobel Lecture - Porter Exhibit

IPR2025-00604 - EX2016 - Second Sutton ‘286 Declaration Exhibit

IPR2025-00604 Patent Owner's Response RESPONSE

IPR2025-00604 - EX2012 - Presta Transcript Exhibit

IPR2025-00604 - EX2022 - Branden Exhibit

Notice Of Stipulation To Extend Certain Deadlines In Due Dates 1 And 2 NOTICE

Notice of Deposition_IPR2025-0604 NOTICE

Ex 3001 Exhibit

Petitioner's Objections to Patent Owner's Exhibits OTHER

Institution Decision: DECISION Granting Institution of Inter Partes Review 35 U.S.C. § 314 DECISION

Order: SCHEDULING ORDER ORDER

Director Discretionary Decision: Refer RESPONSE

Petitioner's Sur-Reply in Opposition to Patent Owner's Discretionary Denial Brief OTHER

IPR2025-00604-Merus Discretionary Denial Reply OTHER

IPR2025-00604-EX2011 Exhibit

Ex. 3101 Exhibit

Exhibit 1058 Exhibit

Exhibit 1059 Exhibit

Exhibit 1055 Exhibit

Exhibit 1060 Exhibit

IPR2025-00604-EX2010-U.S. Pat. No. 9493579 Exhibit

Exhibit 1052 Exhibit

Petitioner's Current List of Exhibits NOTICE

Exhibit 1054 Exhibit

Exhibit 1057 Exhibit

IPR2025-00604 Merus POPR POPR

Exhibit 1053 Exhibit

IPR2025-00604-EX2008 Xencor IPR 286 Sutton Declaration Exhibit

IPR2025-00604-EX2009-Sutton CV Exhibit

Petitioner's Opposition to Patent Owner's Discretionary Denial Brief RESPONSE

Exhibit 1056 Exhibit

IPR2025-00604 - EX2005 Exhibit

IPR2025-00604 - EX2006 Exhibit

IPR2025-00604 - EX2007 Exhibit

IPR2025-00604 - EX2004 Exhibit

IPR2025-00604 - EX2002 Exhibit

Xencor IPR 286 Discretionary Brief (DRAFT 05-30-2025)_Final RESPONSE