Canadian Solar (USA) Inc. et al. vs. Trina Solar Co. Ltd.

Explore the PTAB proceeding IPR2025-00918 filed by Canadian Solar (USA) Inc. et al. on 2025-04-28. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00918

Filing Date

2025-04-28

Accorded Filing Date

2025-04-28

Institution Decision Date

2025-10-29

Last Modified Date

2026-08-14

Proceeding Type

IPR

Termination Date

2026-04-15

Trial Status

Final Written Decision - Appealed

Parties & Counsel

Petitioner

Canadian Solar (USA) Inc. et al.

Represented By

Tiu, Samuelet al

Patent Owner / Respondent

Trina Solar Co. Ltd.

Represented By

de Blank, Baset 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 14953264

Respondent Patent Number 9722104

External Links

Espacenet

Google Patents

Respondent Inventor Jungmin HA et al

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

36 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Pillsbury Winthrop Shaw Pittman, LLP

Customer Number 909

Address PO Box 10500, McLean, VA, 22102, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
31678	John Wetherell Jr	858-509-4022
32995	David Jakopin	650-233-4790
34833	Peter Hahn	619-544-3108
35022	Patrick Doody	703-770-7755
37087	Jack Barufka	703-770-7712
38821	William Atkins	703-770-7900
39328	Robert Perez	703-770-7759
42663	Jean Paul Hoffman	703-770-7794
43488	Robert Bedgood	858-509-4065
43503	Richard Blaylock	619-234-5000 EXT 411
43560	Bryan Collins	703-770-7538
49059	Evan Finkel	213-488-7307
50569	Jaclyn Schade	703-770-7900
51875	Benjamin Kiersz	703-770-7714
52459	James Conley	858-509-4050
54227	Cheng Ko	619-234-5000
54248	Christophe Lair	703-770-7797
56817	Carolyn Toto	213-488-7238
58886	Maithreyi Jaddu	703-770-7803
61214	Hean Koo	703-770-7598
61843	Christopher Drymalla	512-580-9673
63809	Joshua Tucker	512-580-9628
65984	Steven Tepera	512-580-9651
67565	Chad Hammerlind	512-867-8424
67954	Jordan Kwan	650-798-6734
68131	Jeffrey Sheriff	858-509-4081
70744	Yun Wei	202-663-8045
71474	Benjamin Hudson	858-847-4105
75876	Nathan Renov	212-858-1178
76363	Ayaka Hatori	512-580-9603
77133	Chiahow Liu	650-233-4525
78280	Michael Grosso	571-539-8743
79578	Shannon Lewis	512-580-9668
80454	Luke Hartman	512-580-9684
82438	Chase Dietz	512-580-9600
L0659	Vinod Nama	650-838-4386

Proceeding Documents

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a) FINAL

2026-04-15 FILING PARTY: BOARD

Download

Institution Decision: Joined OTHER

2025-10-29 FILING PARTY: BOARD

Download

Notice: Mandatory Notice NOTICE

2025-08-28 FILING PARTY: PATENT OWNER

Download

Notice: Power of Attorney NOTICE

2025-08-28 FILING PARTY: PATENT OWNER

Download

Notice: Referral to Board Panel NOTICE

2025-07-30 FILING PARTY: BOARD

Download

Canadian Solar (USA) Inc. et al. vs. Trina Solar Co. Ltd.

Proceeding Overview

Parties & Counsel

Petitioner

Canadian Solar (USA) Inc. et al.

Represented By

Patent Owner / Respondent

Trina Solar Co. Ltd.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a) FINAL

Institution Decision: Joined OTHER

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Notice: Referral to Board Panel NOTICE

Notice: Notice filing date accorded NOTICE

Declaration of James Mullins Pt. 1 Exhibit

Curriculum Vitae of Dr. Sanjay Banerjee Exhibit

Saga, Advances in crystalline silicon solar cell technology (2010) Exhibit

Petition for Inter Partes Review of U.S. Patent No. 9,722,104 PETITION

Okuyama, et al., Position-selective growth of carbon nanotubes (2006) Exhibit

B. Streetman and S. Banerjee, Solid State Electronic Devices (2006) Pt. 1 Exhibit

Supplemental Declaration of James Mullins, Ph.D. Exhibit

Feldmann et al., Passivated rear contacts for high-efficiency n-type (2013) Exhibit

Oxford College Dictionary, 2nd Ed. (Oxford University Press, Inc. 2002) Exhibit

Kray et al., Study on the edge isolation of industrial silicon solar cells Exhibit

Declaration of James Mullins Pt. 2 Exhibit

Declaration of Dr. Sanjay Banerjee Exhibit

Kwark et al., N-Type SIPOS and Poly-Silicon Emitters (1987) Exhibit

Declaration of James Mullins Pt. 5 Exhibit

Duttagupta et al., Progress in Surface Passivation of Heavily Doped n-Type Exhibit

Scherff, Novel method for preparation of interdigitated back contacted a-Si Exhibit

Petitioner's Motion for Joinder and Request for Expedited Consideration MOTION

F.A. Lindholm, Heavily Doped Polysilicon-Contact Solar Cells (IEEE 1985) Exhibit

Quirk et al., Semiconductor Manufacturing Technology (2001) Exhibit

File History of U.S. Patent No. 9,722,104 Exhibit

Supplemental Declaration of Sanjay Banerjee, Ph.D. Exhibit

Declaration of James Mullins Pt. 4 Exhibit

U.S. Patent No. 9,722,104 Exhibit

Luque et al., Handbook of Photovoltaic Science and Engineering (2003) Exhibit

Petitioner's Power of Attorney NOTICE

Japanese Patent App. Publication No. JP 2010-186862 to T. Watabe Exhibit

Merriam-Webster’s Collegiate Dictionary definition of "periphery" Exhibit

B. Streetman and S. Banerjee, Solid State Electronic Devices (2006) Pt. 3 Exhibit

Korean Patent App. No. 10-2014-0168624 with certified translation Exhibit

Korean Patent App. No. 10-2015-0122846 with certified translation Exhibit

Trina Solar n-type TOPCon Advanced technology steps onto the world stage Exhibit

U.S. Patent No. 8,647,914 to K. Seo Exhibit

File History of U.S. Patent No. 10,014,419 Exhibit

Decker et al., Novel low pressure sputtering source and improved vacuum Exhibit

B. Streetman and S. Banerjee, Solid State Electronic Devices (2006) Pt. 2 Exhibit

Kraning et al., Stays Pending IPR in Del. District Courts are Here to Stay Exhibit

U.S. Patent App. Publication No. 2013/0056051 to Y. Jin Exhibit

Lien et al., Tri-layer antireflection coatings (SiO2/SiO2—TiO2/TiO2) (2006) Exhibit

U.S. Patent Pub. No. 2012/0003781 to Yun Exhibit

Kwark et al., SIPOS Heterojunction contacts to silicon (1984) Exhibit

Declaration of James Mullins Pt. 3 Exhibit

U.S. Patent App. Publication No. 2014/0299187 to J. Chang Exhibit