Zscaler, Inc.
Ex parte reexamination requester·5 ex parte reexams
Zscaler, Inc. has requested 5 USPTO ex parte reexaminations, with 5 currently open. It most often challenges patents owned by STEALTHPATH IP INC., UMBRA TECHNOLOGIES LTD. (UK), and UMBRA TECHNOLOGIES LTD.. 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 (5)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/016,622 | Sep 28, 2026 | — | Methods for Internet Communication Security | STEALTHPATH IP INC. | Open |
| 90/016,554 | Aug 28, 2026 | 10,965,646 | METHODS FOR INTERNET COMMUNICATION SECURITY | STEALTHPATH IP INC. | Open |
| 90/016,408 | Jun 18, 2026 | 10,574,482 | MULTI-PERIMETER FIREWALL IN THE CLOUD | UMBRA TECHNOLOGIES LTD. | Open |
| 90/016,367 | Jun 1, 2026 | 12,335,329 | SYSTEM AND METHOD FOR CONTENT RETRIEVAL FROM REMOTE NETWORK REGIONS | UMBRA TECHNOLOGIES LTD. (UK) | Open |
| 90/016,360 | May 29, 2026 | 12,432,161 | MULTI-PERIMETER FIREWALL IN THE CLOUD | UMBRA TECHNOLOGIES LTD. (UK) | Open |
See the full reexam picture for Zscaler, Inc.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.