Where does Zafgen, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zafgen, Inc. ranks #7,966 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Zafgen, Inc. hold?

Zafgen, Inc. holds 41 US utility patents granted between 2015 and 2019, spanning 8 technology areas.

What is Zafgen, Inc.'s Innovation Score?

Zafgen, Inc. has an Innovation Score of 29.7 out of 100 (31st percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Zafgen, Inc. focus on?

Zafgen, Inc.'s top technology area is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations) with 39 patents, ranking #473 of 6,058 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Zafgen, Inc.'s patent grant rate increasing or decreasing?

Zafgen, Inc.'s recent grant velocity is -100% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Zafgen, Inc.'s patents?

Zafgen, Inc.'s patents average 11.2 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Zafgen, Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView US Corporation

Zafgen, Inc.

USPTO PatentsView assignee record - 41 granted patents across 8 technology areas, recorded in grant years 2015–2019. 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: A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zafgen ranks #7,966 of 49,997 tracked US assignees by granted-patent volume, with 41 patents across 8 technology areas.

#7,966
of 49,997 US assignees by volume: 31st percentile
by Innovation Score (29.7/100): 11.2
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7966 · US Corporation #7,966 · 41 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 41 grants
UPPER-Q #7,966/49,997
PHOTO-FINISH Ward-Kraft
CPC-NARROW A61P · 8 areas
INNOV-THIN 29.7/100
CLAIMS-PAR 11.2 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ward-Kraft, 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 Zafgen’s 29.7 Innovation Score adds up

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

Volume 12.9 pts (44%) Velocity 0.0 pts (0%) Breadth 10.0 pts (34%) Claim depth 6.7 pts (23%)

Qualcomm Incorporated · highest

85
Allied Wheel… · near

30
Ortoma AB · near

30
Sorrell Quarters · near

30
Volvik · near

30
Zafgen · this assignee

30
3D Lighting… · lowest

7

What this shows Zafgen's Innovation Score is 29.7/100 (31st 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.

Does more volume mean deeper claims for Zafgen?

Each dot is one of Zafgen’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). Zafgen’s own 11.2 claims/patent is at or below the 11.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Zafgen vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Zafgen's grants concentrate

Zafgen, Inc. is a focused PatentsView assignee: 8 CPC subclasses with 95.1% of grants classified under A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations). Peak complete grant year is 2017 (13 grants) versus a trough of 5 in 2019. By volume, Zafgen sits between Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. and Amcor Rigid Packaging USA, LLC.

Wuhan Kaidi Engin…

41
Ward-kraft

41
Worthington Indus…

41
Zhejiang Chint El…

41
Zafgen ◀

41
2266170 Ontario

40
Abbvie Stemcentrx

40
Alios Biopharma

40
Amcor Rigid Packa…

40

What this shows Zafgen holds 41 patents at rank #7,967, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zafgen

By rank, the assignees closest to #7,967 in granted patent volume.

Leaders in A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Zafgen, neither rank-band nor same-CPC leaders (those blocks stay above). In A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…), Zafgen ranks #473 of 6,058 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (30 here).

Sorrell Quarters, LLC 30 Volvik Inc. 30 Allied Wheel Components 30 Ortoma AB 30

Zafgen's Innovation Score vs. every tracked assignee

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

30 31st percentile higher than 31% of 49,997 US assignees

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

USPTO utility patent grants by year · 2015–2019

Grants by year

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

View data table

Zafgen, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	7	17.1%
2016	10	24.4%
2017	13	31.7%
2018	6	14.6%
2019	5	12.2%

Which technologies does Zafgen, Inc. patent most?

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 39

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 31

C07D - Heterocyclic Compounds 29

Y02A - Technologies FOR Adaptation TO Climate Change 4

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 2

C12Y - Enzymes 2

C07B - General Methods OF Organic CHEMISTRY; Apparatus Therefor 2

C07C - Acyclic OR Carbocyclic Compounds 1

Top 8 of 8 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

Zafgen, Inc.'s patent record in context - here's where to go next.

Zafgen, Inc.'s lead technology class is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations), 95.1% of its portfolio - see every assignee active in that class. Explore A61P
Ranked #7,966 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zafgen, Inc. against Wuhan Kaidi Engineering Technology Research Institute Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.7/100 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

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

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.