QUARTERHILL INC.
Patent owner in reexamination·3 ex parte reexams
QUARTERHILL INC.'s patents have been the subject of 3 USPTO ex parte reexaminations. Its patents are most often challenged by Huizhou TCL Mobile Communication Co. Ltd., TCT Mobile (US) Inc., and TCL Mobile Communication (HK) Co., 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
Outcome track record
How reexams of this owner's patents resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Claim-survival rate
Defense metrics
Claim-survival rate, average pendency, and the open/closed split across every reexam of this owner's patents.
- Survival rate of closed proceedings
- Average pendency in months
Challengers & examiners
Which requesters most often challenge this owner's patents, and which examiners decide them.
- Top requesters
- Most frequent examiners
Recent reexaminations (3)
| Control # | Filed | Patent | Title | Requester | Status |
|---|---|---|---|---|---|
| 90/019,259 | Sep 26, 2023 | 8,259,688 | PRE-ALLOCATED RANDOM ACCESS IDENTIFIERS | Huizhou TCL Mobile Communication Co. Ltd., TCT Mobile (US) Inc., and TCL Mobile Communication (HK) Co., Ltd. | Closed |
| 90/014,794 | Jul 2, 2021 | 8,259,688 | PRE-ALLOCATED RANDOM ACCESS IDENTIFERS | Huizhou TCL Mobile Communication Co. Ltd., TCT Mobile (US) Inc., and TCL Mobile Communication (HK) Co., Ltd. | Closed |
| 90/014,587 | Oct 5, 2020 | 9,854,577 | MULTI-BAND CHANNEL AGGREGATION | Huizhou TCL Mobile Communication Co. Ltd., TCT Mobile (US) Inc., and TCL Mobile Communication (HK) Co., Ltd. | Closed |
See the full reexam picture for QUARTERHILL INC.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.