Ascend Elements, Inc. vs. Duesenfeld GmbH

Explore the PTAB proceeding PGR2025-00037 filed by Ascend Elements, Inc. on 2025-03-07. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

PGR2025-00037

Filing Date

2025-03-07

Accorded Filing Date

2025-03-07

Institution Decision Date

2025-10-10

Last Modified Date

2025-12-08

Proceeding Type

PGR

Termination Date

2025-10-10

Trial Status

Institution Denied

Parties & Counsel

Petitioner

Ascend Elements, Inc.

Represented By

Gish, Andrewet al

Patent Owner / Respondent

Duesenfeld GmbH

Represented By

Carlson, Stevenet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1700 - Chemical & Materials Engineering

Patent Information

1 Patent Involved

Respondent Application Number 16343224

Respondent Patent Number 12119463

External Links

Espacenet

Google Patents

Respondent Inventor Christian HANISCH

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

6 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name WC&F IP

Customer Number 30743

Address 11491 SUNSET HILLS ROAD, SUITE 340, RESTON, VA, 20190, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
32635	Michael Whitham	703-787-9400
35371	Laurence Stein	703-787-9400
45922	Ruth Tyler-Cross	703-787-9400
71290	Whitney Fields	703-787-9400
71686	Jacquelyn Reed	703-787-9400
72545	Timothy Miller	703-787-9400

Proceeding Documents

Notice: refund approved NOTICE

2025-12-08 FILING PARTY: BOARD

Download

PETITIONER'S REQUEST FOR REFUND OF POST-INSTITUTION FEES FOR POST GRANT REVIEW OTHER

2025-12-04 FILING PARTY: PETITIONER

Download

Institution Decision: Deny DECISION

2025-10-10 FILING PARTY: BOARD

Download

Director Discretionary Decision: Refer RESPONSE

2025-08-14 FILING PARTY: BOARD

Download

Ascend Response to Discretionary Denial Brief RESPONSE

2025-07-16 FILING PARTY: PETITIONER

Download

Ascend Elements, Inc. vs. Duesenfeld GmbH

Proceeding Overview

Parties & Counsel

Petitioner

Ascend Elements, Inc.

Represented By

Patent Owner / Respondent

Duesenfeld GmbH

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

PETITIONER'S REQUEST FOR REFUND OF POST-INSTITUTION FEES FOR POST GRANT REVIEW OTHER

Institution Decision: Deny DECISION

Director Discretionary Decision: Refer RESPONSE

Ascend Response to Discretionary Denial Brief RESPONSE

Ex. 2022- Electrocycling Patent -- German Exhibit

Ex. 2014 - 097 Patent File History Exhibit

Ex. 2027 - WO002010149611A1 -- Translation Certificate Exhibit

Patent Owner Preliminary Response POPR

Ex. 2017 - Gao - 2009 Exhibit

Ex. 2026 - WO002010149611A1 (German) Exhibit

Ex. 2021- Electrocycling Patent -- (English) Exhibit

Ex. 2019 - [Dkt. 062] Order Enters Agreed Constructions for ' 097 Exhibit

Ex. 2024 - US7198865_B2 - Sloop Exhibit

Ex. 2028 - Prelim. Guidance - PO's Motion to Amend (IPR2024-00948) Exhibit

Ex. 2013 US11050097_B2 - Hanisch Exhibit

Ex. 2023- Electrocycling Patent -- Translation Certificate Exhibit

Ex. 2018 - Hanisch 419 Exhibit

Ex. 2012 - Plöger Declaration Exhibit

Ex. 2025- WO002010149611A1 -- (English) Exhibit

Ex. 2011 - Declaration of Vani Dantam Exhibit

Ex. 2015 US9450277_B2 - Dunagan Exhibit

Ex. 2016 - US5632863_A - Meador Exhibit

Ex. 2020 - Institution Decision (IPR2024-00948 Ascend) Exhibit

Exhibit 2010 - Spies Deposition Exhibit 1026 (06-13-2025) Exhibit

Exhibit 2004 - Walter van Schalkwijk , PhD - Deposition Tr. 02-06-2025 Exhibit

Exhibit 2009 - Volker Spies Deposition Transcript Exhibit

Exhibit 2002 - Dictionary excerpts Exhibit

Exhibit 2008 - Merriam-Webster's Dictionary excerpt Exhibit

Exhibit 2005 - Paper 1 Petition for Inter Partes Review (IPR2024-00948) Exhibit

Patent Owner's Discretionary Denial Brief RESPONSE

Exhibit 2007 - [Dkt 050] Joint Claim Construction Chart Exhibit

Exhibit 2003 - Ascend's Initial Invalidity Contentions Exhibit

Exhibit 2006 - REDACTED Ascend Reply to PO Response (IPR2024-00948) Exhibit

Exhibit 2001 - 2025.06.15 Declaration of Vani Dantam Exhibit

Notice: Notice filing date accorded NOTICE

Notice: Power of Attorney NOTICE

Notice: Mandatory Notice NOTICE

U.S. Patent No. 12,119,463 Exhibit

Solef® PVDF Typical Properties, Solvay Brochure Exhibit

Japanese Patent App. Pub. JP2016080284A ("Yosuke") Exhibit

Nitta et al., Li-ion ballery materials: present and future Exhibit

U.S. Patent App. Pub. No. US 2008/0050295 A1 ("Uchida") Exhibit

U.S. Patent App. Pub. No. US 2014/0290438 A1 ("Hanisch") Exhibit

Certification for translation of Yosuke Exhibit

Translation of Tomioka Exhibit

Yang et al., Thermal stability of LiPF6 salt and Li-ion battery electrolyte Exhibit

U.S. Patent No. 5,691,077 Exhibit

Declaration of Marc Juzkow Exhibit

'097 Patent Owner Response Exhibit

Han et al., Lithium-ion hopping weakens thermal stability Exhibit

Kwade et al., LithoRec: Recycling lithium-ion batteries Exhibit

Notice: Power of Attorney NOTICE

IPR2024-00887 Patent Owner Response Exhibit

Certification for translation of Tomioka Exhibit

Perry et al., Perry's Chemical Engineers' Handbook (7th Ed.) Exhibit

Petition: as filed PETITION

Japanese Patent App. Pub. JPHI0255861 ("Tomioka") Exhibit

'097 Institution Decision Exhibit

Lu et al., Thermal behavior and decomposition kinetics Exhibit

U.S. Patent No. 11,050,097 Exhibit

Certification of translation of LithoRec Exhibit

Translation of Yosuke Exhibit

U.S. Patent No. 9,843,077 ("Hayashi") Exhibit

Declaration of Sylvia Hall-Ellis, Ph.D. Exhibit