Where does Ironwood Pharmaceuticals, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ironwood Pharmaceuticals, Inc. ranks #10,970 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 Ironwood Pharmaceuticals, Inc. hold?

Ironwood Pharmaceuticals, Inc. holds 28 US utility patents granted between 2015 and 2020, spanning 9 technology areas.

What is Ironwood Pharmaceuticals, Inc.'s Innovation Score?

Ironwood Pharmaceuticals, Inc. has an Innovation Score of 33.3 out of 100 (44th 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 Ironwood Pharmaceuticals, Inc. focus on?

Ironwood Pharmaceuticals, Inc.'s top technology area is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations) with 25 patents, ranking #782 of 6,058 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

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

Ironwood Pharmaceuticals, Inc.'s recent grant velocity is -88% 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 Ironwood Pharmaceuticals, Inc.'s patents?

Ironwood Pharmaceuticals, Inc.'s patents average 18.4 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 Ironwood Pharmaceuticals, 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

Ironwood Pharmaceuticals, Inc.

USPTO PatentsView assignee record - 28 granted patents across 9 technology areas, recorded in grant years 2015–2020. 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, Ironwood ranks #10,970 of 49,997 tracked US assignees by granted-patent volume, with 28 patents across 9 technology areas.

#10,970
of 49,997 US assignees by volume: 44th percentile
by Innovation Score (33.3/100): 18.4
avg claims per patent: -88%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R10970 · US Corporation #10,970 · 28 grants

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

GRANTS-SMALL 28 grants
UPPER-Q #10,970/49,997
PHOTO-FINISH Icomera AB
CPC-NARROW A61P · 9 areas
INNOV-THIN 33.3/100
CLAIMS-RICH 18.4 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -88% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Icomera AB (±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 Ironwood’s 33.3 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 11.6 pts (35%) Velocity 0.0 pts (0%) Breadth 10.6 pts (32%) Claim depth 11.0 pts (33%)

Qualcomm Incorporated · highest

85
Mitsubishi Aluminum · near

33
Altum View Systems · near

33
Ironwood Pharmaceuti… · this assignee

33
JMC Enterprises · near

33
Neuvana · near

33
3D Lighting… · lowest

7

What this shows Ironwood's Innovation Score is 33.3/100 (44th 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 Ironwood?

Each dot is one of Ironwood’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). Ironwood’s own 18.4 claims/patent is ABOVE the 14.9 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Ironwood's grants concentrate

Ironwood Pharmaceuticals, Inc. is a focused PatentsView assignee: 9 CPC subclasses with 89.3% of grants classified under A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations). Peak complete grant year is 2017 (9 grants) versus a trough of 2 in 2018. By volume, Ironwood sits between Inuitive Ltd. and Japan Atomic Energy Agency.

Inuitive

28
IOT

28
Ipar

28
Ipsen Bioinnovati…

28
Icomera AB

28
Innovative Micro…

28
Intergraph

28
Japan Atomic Ener…

28
Ironwood Pharmace… ◀

28

What this shows Ironwood holds 28 patents at rank #10,965, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ironwood

By rank, the assignees closest to #10,965 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Ironwood, neither rank-band nor same-CPC leaders (those blocks stay above). In A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…), Ironwood ranks #782 of 6,058 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (33 here).

Altum View Systems Inc. 33 JMC Enterprises, Inc. 33 Mitsubishi Aluminum Co., Ltd. 33 Neuvana, LLC 33

Ironwood's Innovation Score vs. every tracked assignee

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

33 44th percentile higher than 44% 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 · 2015–2020

Grants by year

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

View data table

Ironwood Pharmaceuticals, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	21.4%
2016	5	17.9%
2017	9	32.1%
2018	2	7.1%
2019	3	10.7%
2020	3	10.7%

Which technologies does Ironwood Pharmaceuticals, Inc. patent most?

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 25

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 22

C07D - Heterocyclic Compounds 16

C07K - Peptides 9

Y02A - Technologies FOR Adaptation TO Climate Change 8

C07C - Acyclic OR Carbocyclic Compounds 3

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 1

Top 9 of 9 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

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

Ironwood Pharmaceuticals, Inc.'s lead technology class is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations), 89.3% of its portfolio - see every assignee active in that class. Explore A61P
Ranked #10,970 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ironwood Pharmaceuticals, Inc. against Inuitive Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.3/100 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.