PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang WAH Technology Co., Ltd.

USPTO PatentsView assignee record - 16 granted patents across 2 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: H01L (Semiconductor Devices NOT Covered BY Class H10).

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The verdict

According to USPTO PatentsView, Chang ranks #17,548 of 49,997 tracked US assignees by granted-patent volume, with 16 patents across 2 technology areas.

#17,548
of 49,997 US assignees by volume
11th percentile
by Innovation Score (22.9/100)
10.8
avg claims per patent
-50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R17548 · Foreign Corporation #17,548 · 16 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

  • GRANTS-MICRO 16 grants
  • MID-PACK #17,548/49,997
  • PHOTO-FINISH CDA Research Group
  • CPC-NARROW H01L · 2 areas
  • INNOV-THIN 22.9/100
  • CLAIMS-PAR 10.8 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-DROP -50% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: CDA Research Group, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Chang’s 22.9 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Chang

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Chang's Innovation Score is 22.9/100 (11th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Chang?

Each dot is one of Chang’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Chang’s own 10.8 claims/patent is at or below the 12.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Chang vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 15.915.91616.1 0102030 Granted patents (volume) Avg claims / patent CDA Research Group, Inc. - 16, 25.44CDA Research GroupCemco, LLC - 16, 16.94CemcoCentral Michigan University - 16, 17.94Central Michigan…Centro DE INVESTIGACIÓN BIOMÉDICA EN RED - 16, 11.56Centro DE Investi…Check-cap Ltd. - 16, 17.31Check-capCheng Shin Rubber IND. Co., Ltd. - 16, 1.94Cheng Shin Rubber…Chengdu Image Design Technology Co. Ltd. - 16, 10.12Chengdu Image Des…Chengdu Xgimi Technology Co., Ltd. - 16, 12.88Chengdu Xgimi Tec…Chang WAH Technology Co., Ltd. - 16, 10.81Chang WAH Technol…
Chang vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Chang's grants concentrate

Chang WAH Technology Co., Ltd. is a focused PatentsView assignee: 2 CPC subclasses with 100% of grants classified under H01L (Semiconductor Devices NOT Covered BY Class H10). Peak complete grant year is 2019 (5 grants) versus a trough of 1 in 2015. By volume, Chang sits between CDA Research Group, Inc. and Chengdu Xgimi Technology Co., Ltd..

Chang's three-year grant acceleration

Chang WAH Technology Co., Ltd. shows 2 grants in 2022–2024 against only 8 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Who files at Chang's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Chang holds 16 patents at rank #17,538, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Chang

By rank, the assignees closest to #17,538 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

Other assignees with the most granted patents in Chang's primary technology class.

Chang's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

23 11th percentile higher than 11% of 49,997 US assignees

This assignee 0 100 every tracked assignee, bucketed by value

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

0123456 201520172018201920202021202220242025 1
USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table
Chang WAH Technology Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 1 6.3%
2017 2 12.5%
2018 2 12.5%
2019 5 31.3%
2020 2 12.5%
2021 1 6.3%
2022 1 6.3%
2024 1 6.3%
2025partial year 1 6.3%

Which technologies does Chang WAH Technology Co., Ltd. patent most?

Top 2 of 2 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Chang WAH Technology Co., Ltd.'s patent record in context - here's where to go next.

  • Chang WAH Technology Co., Ltd.'s lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 100% of its portfolio - see every assignee active in that class. Explore H01L
  • Ranked #17,548 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Chang WAH Technology Co., Ltd. against CDA Research Group, Inc., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 22.9/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page
  • USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
  • Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
  • USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.