Toyo Co., Ltd. v. First Solar, Inc. - 5:26-cv-10832

Toyo Co., Ltd. v. First Solar, Inc. (Case No. 5:26-cv-10832), filed on Sep 23, 2026 in the District Court, N.D. California involving patent infringement. This case involves patent infringement claims between the parties. Explore details about the litigants, key filings, and major docket updates.

Case Details

Case Number
5:26-cv-10832
Filing Date
Sep 23, 2026
Cause of Action
Patent Infringement
Status
-
Court
District Court, N.D. California
Nature of Suit
Patent

Parties Involved

The following parties are involved in this case, with their respective legal representatives for the case.

NameRepresented By
Toyo Solar Texas LLC -
Vietnam Sunergy (Bac Ninh) Company Limited -
TOPTOYO Investment Pte. Ltd. -
First Solar, Inc. -
VSUN Solar USA Inc. -

Patents Involved

Patents not found - set an alert to get notified when patents are added.

Docket Entries

The Docket Entries section provides a chronological list of all significant filings and court actions in this case.

DateDocket EntryType

Set alerts for critical docket entry

Sep 23, 2026COMPLAINT FOR DECLARATORY JUDGMENT against First Solar, Inc. ( Filing fee $ 405, receipt number ACANDC-22501916.). Filed by Vietnam Sunergy Joint Stock Company, Toyo Solar Manufacturing One Member Private Limited Company, Vietnam Sunergy (Bac Ninh) Company Limited, TOPTOYO Investment Pte. Ltd., Toyo Co., Ltd., Toyo Solar Texas LLC, VSUN Solar USA Inc.. (Attachments: # 1 Exhibit A, # 2 Exhibit B, # 3 Exhibit C)(Yang, Irene) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document
Sep 23, 2026Proposed Summons. (Yang, Irene) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document
Sep 23, 2026REPORT on the filing or determination of an action regarding a Patent or Trademark (cc: form mailed to register). (Yang, Irene) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document
Sep 23, 2026Rule 7.1 Disclosures by TOPTOYO Investment Pte. Ltd., Toyo Co., Ltd., Toyo Solar Manufacturing One Member Private Limited Company, Toyo Solar Texas LLC, VSUN Solar USA Inc., Vietnam Sunergy (Bac Ninh) Company Limited, Vietnam Sunergy Joint Stock Company identifying Other Affiliate TOPTOYO Investment Pte. Ltd. for Toyo Co., Ltd., Toyo Solar Manufacturing One Member Private Limited Company; Other Affiliate Vietnam Sunergy Joint Stock Company for VSUN Solar USA Inc., Vietnam Sunergy (Bac Ninh) Company Limited; Other Affiliate TOYO Holdings LLC for TOPTOYO Investment Pte. Ltd.; Other Affiliate Abalance Corporation for Vietnam Sunergy Joint Stock Company; Other Affiliate TOYO Solar LLC for Toyo Solar Texas LLC. (Yang, Irene) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document
Sep 23, 2026Certificate of Interested Entities by TOPTOYO Investment Pte. Ltd., Toyo Co., Ltd., Toyo Solar Manufacturing One Member Private Limited Company, Toyo Solar Texas LLC, VSUN Solar USA Inc., Vietnam Sunergy (Bac Ninh) Company Limited, Vietnam Sunergy Joint Stock Company identifying Corporate Parent Abalance Corporation, Other Affiliate WWB Corporation, Other Affiliate FUJI Solar Co., Ltd., Other Affiliate WA Global Corporation, Other Affiliate TOYO Holdings LLC, Other Affiliate TOYO Solar LLC, Other Affiliate BURSA Technology PTE. Ltd., Other Affiliate Vietnam High Technology Co., Ltd., Other Affiliate Vietnam Natural Energy Co., Ltd., Other Affiliate Rice Investment Co., Ltd., Other Affiliate BestToYo Technology Co., Ltd. for TOPTOYO Investment Pte. Ltd., Toyo Co., Ltd., Toyo Solar Manufacturing One Member Private Limited Company, Toyo Solar Texas LLC, VSUN Solar USA Inc., Vietnam Sunergy (Bac Ninh) Company Limited, Vietnam Sunergy Joint Stock Company. (Yang, Irene) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document
Sep 23, 2026MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-22503783.) filed by TOPTOYO Investment Pte. Ltd., Toyo Co., Ltd., Toyo Solar Manufacturing One Member Private Limited Company, Toyo Solar Texas LLC, VSUN Solar USA Inc., Vietnam Sunergy (Bac Ninh) Company Limited, Vietnam Sunergy Joint Stock Company. (Attachments: # 1 Certificate of Good Standing)(Nguyen, Tung) (Filed on 9/23/2026) (Entered: 09/23/2026)PACER Document