Jose Cherson Weissbrot
Ex parte reexamination requester·6 ex parte reexams
Jose Cherson Weissbrot has requested 6 USPTO ex parte reexaminations, with 5 currently open. It most often challenges patents owned by Semisilicon Technology Corp., Laltitude LLC, and Constantin Olaru. 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
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 |
|---|---|---|---|---|---|
| 90/016,026 | Mar 6, 2026 | 10,187,935 | LIGHT EMITTING DIODE LAMP WITH BURNABLE FUNCTION AND LIGHT EMITTING DIODE LAMP STRING WITH BURNABLE FUNCTION | Semisilicon Technology Corp. | Closed |
| 90/015,953 | Feb 17, 2026 | D946,906 | PAINT BRUSH | — | Open |
| 90/015,946 | Feb 4, 2026 | 9,939,117 | LIGHT EMITTING DIODE SYSTEM WITH LIGHT SIGNALS CARRIED VIA POWER LINES | Semisilicon Technology Corp. | Open |
| 90/015,939 | Feb 3, 2026 | D929,505 | TOY BRICK SET | Laltitude LLC | Open |
| 90/015,785 | Dec 16, 2025 | D997,043 | DUAL BALL HITCH | Constantin Olaru | Open |
| 90/015,737 | Dec 11, 2025 | D965,476 | TWO-WHEEL DRIVE OFF-ROAD MOTORCYCLE | Zhejiang Taotao Vehicles Co. Ltd. | Open |
See the full reexam picture for Jose Cherson Weissbrot
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.