PlainPatent
USPTO 2015–2025 USPTO PatentsView US Corporation

IMMUNOGEN, INC.

USPTO PatentsView assignee record — 147 granted patents across 15 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS).

Explore the portfolio See the ranking
147
Total patents granted
15
CPC technology areas
24.4
Avg claims per patent
-37%
5-year filing velocity

The verdict

IMMUNOGEN holds 147 US patents across 15 technology areas — rank #2,642 of 50,000 tracked assignees.

#2,642
of 50,000 US assignees by volume
Top 15%
by Innovation Score (49.0/100)
24.4
avg claims per patent
-37%
filing velocity, last 5 yrs

Portfolio overview

IMMUNOGEN, INC. has been granted 147 US utility patents between 2015 and 2025, placing IMMUNOGEN, INC. at rank #2,642 across all assignees tracked by PlainPatent. This portfolio spans 15 distinct Cooperative Patent Classification (CPC) subclasses, averaging 24.4 claims per patent with primary concentration in A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS). As a US Corporation, IMMUNOGEN, INC. is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 49.0/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 57 grants, compared with 90 in the 2015–2019 window — a -37% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. IMMUNOGEN, INC.'s 24.4 average claims per patent reflects complex, broadly scoped inventions that are difficult for competitors to design around, while concentration in 15 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark IMMUNOGEN, INC. against peers pursuing similar technology classes.

How does IMMUNOGEN compare?

Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀

patents

What this shows IMMUNOGEN holds 147 patents — placing it at rank #2,642 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.

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

IMMUNOGEN's Innovation Score vs. every tracked assignee

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

49 Top 15% higher than 85% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). This entry sits in this band. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. 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

USPTO utility patent grants by year · 2015–2025

0510152025 20152016201720182019202020212022202320242025 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
IMMUNOGEN, INC. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 15 10.2%
2016 21 14.3%
2017 18 12.2%
2018 16 10.9%
2019 20 13.6%
2020 14 9.5%
2021 16 10.9%
2022 11 7.5%
2023 9 6.1%
2024 6 4.1%
2025 1 0.7%

Which technologies does IMMUNOGEN, INC. patent most?

Top 15 of 15 technology areas

Patent Moat Analysis

Portfolio Volume Moderate
Tech Breadth Focused
Claim Depth Complex
Velocity Declining

Where it ranks

Overall rank by patents

#2,642

Across all tracked assignees

Innovation Score

49.0 out of 100

View all rankings →

Data Source

USPTO PatentsView — US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does IMMUNOGEN, INC. hold?
IMMUNOGEN, INC. holds 147 US granted patents filed between 2015 and 2025, spanning 15 technology areas.
What is IMMUNOGEN, INC.'s Innovation Score?
IMMUNOGEN, INC. has an Innovation Score of 49.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does IMMUNOGEN, INC. focus on?
IMMUNOGEN, INC.'s top technology area is A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS) with 119 patents. The company has filed patents in 15 CPC subclasses total.
Is IMMUNOGEN, INC.'s patent filing rate increasing or decreasing?
IMMUNOGEN, INC.'s recent filing velocity is -37% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for IMMUNOGEN, INC.'s patents?
IMMUNOGEN, INC.'s patents average 24.4 claims each. This indicates complex, broadly scoped patents that are harder for competitors to design around.
How is the IMMUNOGEN, 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.

Learn More

How Innovation Score Works

Understand the four dimensions behind the composite score
How to Read Patent Data

Plain-English guide to CPC codes, claims, and metrics
Patent Moat Analysis

How companies use patents as competitive barriers

Explore the patent dataset

A61P technology

IMMUNOGEN, INC.'s primary CPC class — all holders and yearly trends
Top 50 patent holders

See where IMMUNOGEN, INC. ranks among the largest US patent assignees
All technology classes

Browse every CPC technology area by patent activity
How the score works

The four dimensions behind the Innovation Score

Related

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

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.

All federal data sources used on this page
  • USPTO PatentsView — official U.S. Patent and Trademark Office bulk patent data. patentsview.org
  • USPTO Patent Application Information Retrieval (PAIR) — application status and file history. uspto.gov/patents/pair
  • USPTO Bulk Data Storage System — comprehensive patent text + claims dataset. bulkdata.uspto.gov
  • USPTO CPC Classification — Cooperative Patent Classification scheme for technology categorization. uspto.gov/cpc
  • SEC EDGAR — public filings cross-reference for assignee corporate entity matching. sec.gov/edgar
  • WIPO PATENTSCOPE — international patent context (related international filings). wipo.int/patentscope