ExamPat

W&K IP

Patent reexamination counsel·11 ex parte reexams

W&K IP has served as patent-owner counsel in 11 USPTO ex parte reexaminations, with 2 currently open. The firm most often represents Su, Liangliang, Weiping Shi, and Zan IP LLC. ExamPat indexes the full prosecution record for each proceeding, including office-action grounds, certificate outcomes, and downstream PTAB and Federal Circuit decisions.

Filings by year

2
20
3
21
4
22
1
24
1
25

Top patent owners represented

Outcome track record

How this firm's reexams resolve once a certificate issues: all claims confirmed, amended, mixed, or canceled.

  • Certificate outcome split across every bucket
  • Share of proceedings where claims survived

Practice metrics

Certificate rate, average pendency, and the open/closed split across the firm's full reexam docket.

  • Certificate rate of closed proceedings
  • Average pendency in months

Examiners & adversaries

Which examiners most often decide this firm's reexams, and which requesters most often challenge its patents.

  • Most frequent examiners
  • Top opposing requesters

Recent reexaminations (11)

Control #FiledPatentTitleOwnerStatus
90/015,420Aug 1, 2025D902,588Bluetooth headset charging caseSu, LiangliangOpen
90/019,621Aug 15, 2024D935,559Shower Head—Open
90/015,116Sep 12, 2022D920,723Corner shelf—Closed
90/015,107Aug 30, 2022D935,559SHOWER HEAD—Closed
90/015,085Aug 4, 2022D955,200LOCK—Closed
90/014,775Jun 17, 2022D898,185Manual breast pump—Closed
90/014,872Sep 30, 2021D877,419Reflective safety vestWeiping ShiClosed
90/014,790Jul 1, 2021D914,266LampZan IP LLCClosed
90/014,776Jun 17, 2021D898,185MANUAL BREAST PUMPNingbo Huiyoo Baby Products Co. Ltd.Closed
90/014,610Nov 16, 2020D849,314Moon lampDongguan Qiangneng Electronics Co.Closed
90/014,529Jun 12, 2020D880,061Hair Dryer Brush—Closed

Other reexam law firms

See the full reexam picture for W&K IP

Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.