Ka Filing LLC
Ex parte reexamination requester·6 ex parte reexams
Ka Filing LLC has requested 6 USPTO ex parte reexaminations, with 5 currently open. It most often challenges patents owned by Meidi Chen, Shengqiang Wu, and Yin Yinpan. 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
Top patent owners challenged
Outcome track record
How this requester's challenges resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Share of challenges that canceled claims
Challenge metrics
Cancellation rate, average pendency, and the open/closed split across every reexam this requester has filed.
- Outcome rate of closed challenges
- Average pendency in months
Examiners & defense counsel
Which examiners decide this requester's challenges, and which firms defend the targeted patents.
- Most frequent examiners
- Top opposing counsel
Recent reexaminations (6)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/015,507 | Oct 21, 2025 | D956,441 | A Chair | Meidi Chen | Open |
| 90/015,478 | Oct 16, 2025 | D1,030,115 | Solar Street Light | Shengqiang Wu | Open |
| 90/015,479 | Oct 15, 2025 | D1,020,037 | Solar Street Light | Shengqiang Wu | Open |
| 90/015,483 | Sep 17, 2025 | D1,043,218 | Straw | Yin Yinpan | Open |
| 90/015,499 | Sep 4, 2025 | D1,008,678 | HIgh Bar Swivel Chair with Teslin Fabric | Meidi Chen | Open |
| 90/015,129 | Jan 6, 2023 | D945,866 | Magnetic hook | — | Closed |
See the full reexam picture for Ka Filing LLC
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.