J
Janssen Vaccines
Biotech & Life Sciences · Leiden, Netherlands · Founded 2000 · IPO 2000 Unicorn
Janssen Vaccines mafia
Startups founded by Janssen Vaccines alumni
Former Janssen Vaccines employees who went on to start their own companies. Sorted by Dealroom signal score.
Helmuth van EsNetherlands
Dinko ValerioNetherlands
Björn SjöstrandSweden
Jaap GoudsmitNetherlands
Kasper RoetUnited States
Magdalena KozłowskaPolandGlobal footprint
Where Janssen Vaccines has talent and traffic
across markets
Patent intelligence
$7.1B patent portfolio · 3,963 active families
Where Janssen Vaccines concentrates vs peers
Each axis is a top-10 topic across Janssen Vaccines and its closest peers. #1 = 100, #10 = 10, absent = 0.
Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.
Market sentiment
What the market is saying about Janssen Vaccines
An AI-synthesized read of the highest-engagement posts about Janssen Vaccines on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See Janssen Vaccines on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.