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Shenzhen Doumi International Trade Co., Ltd. v. Happiier, LLC - 2:26-cv-04311

Shenzhen Doumi International Trade Co., Ltd. v. Happiier, LLC (Case No. 2:26-cv-04311), filed on Nov 5, 2026 in the District Court, W.D. Washington 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
2:26-cv-04311
Filing Date
Nov 5, 2026
Cause of Action
Patent Infringement
Status
-
Court
District Court, W.D. Washington
Nature of Suit
Patent

Parties Involved

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

NameRepresented By
Happiier, LLC -
Shenzhen Doumi International Trade Co., Ltd. -

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

Nov 5, 2026CORPORATE DISCLOSURE STATEMENT indicating no Corporate Parents and/or Affiliates. Filed pursuant to Fed.R.Civ.P 7.1(a)(1). Filed by Shenzhen Doumi International Trade Co., Ltd.. (Chen, Xiangru) (Entered: 11/05/2026)PACER Document
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)PACER Document
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment
Nov 5, 2026COMPLAINT against defendant(s) Happiier, LLC with JURY DEMAND (Receipt # BWAWDC-10127039) Attorney Xiangru Chen added to party Shenzhen Doumi International Trade Co., Ltd.(pty:pla) filed by Shenzhen Doumi International Trade Co., Ltd.. (Attachments: # 1 Exhibit, # 2 Exhibit, # 3 Exhibit, # 4 Exhibit, # 5 Exhibit, # 6 Exhibit, # 7 Civil Cover Sheet, # 8 Summons, # 9 Report on Patents and Trademarks (AO Form 120))(Chen, Xiangru) (Entered: 11/05/2026)Attachment