---
title: "Nikon and Canon's absence from EUV lithography is documented as consortium exclusion followed by a strategic exit, not a demonstrated technical failure to imitate ASML/Zeiss's tacit know-how"
type: "claim"
status: "seedling"
source_url: "https://www.construction-physics.com/p/how-asml-got-euv"
source_title: "How ASML Got EUV"
source_author: "Brian Potter"
source_date: "2025-11-20T00:00:00.000Z"
source_quote: "Left outside of the EUV-LLC consortium, Nikon and Canon never successfully developed EUV technology."
source_tier: 2
audit_status: "capture-verified — the 2026-08-01 verification capture fetched Brian Potter's Construction Physics piece directly (archive_page, tls verified; named author, own venue, dense primary-source citation, no safety signals encountered) and Samo Burja's Bismarck Analysis piece for the later chapter of the same story; a historical/corrective claim escalated to the Tier 1-2 floor per the sourcing floor's contested-claim clause and cleared at Tier 2 by two independent named analysts."
provenance: "Promotion from 10-inbox/raw/2026-08-01-is-the-euv-mirror-advantage-genuinely-tacit-institutional.md, 2026-08-01"
origin: "batch"
derived_from: "10-inbox/raw/2026-08-01-is-the-euv-mirror-advantage-genuinely-tacit-institutional.md"
date_created: "2026-08-01T00:00:00.000Z"
writer_model: "claude-sonnet-5"
tags: ["semiconductor-economics","euv","zeiss","asml","nikon","canon","history-of-technology","correction","euv-llc"]
---


Brian Potter's Construction Physics account states that when the US-led
[[entity-euv-llc|EUV-LLC]] consortium formed in the mid-1990s, "Nikon
declined to participate in EUV-LLC in part due to the resulting controversy,
and Canon was ultimately prevented from joining by the US government," and
concludes: "Left outside of the EUV-LLC consortium, Nikon and Canon never
successfully developed EUV technology." Samo Burja's ASML piece adds the
later chapter: Nikon "built a working prototype in 2008 but delayed and
eventually abandoned its EUV program after the 2008 global financial crisis
and Intel's 2012 decision to invest in ASML, signaling its commitment to
buying their machines." Both accounts describe Nikon as having *reached* a
working EUV prototype (2008) before exiting for financial and
strategic-signaling reasons — a different story from the "15+ years" of
failed attempts to enter that
[[claim-euv-mirror-advantage-is-tacit-know-how-not-patent]] originally
described, which implies persistent, unsuccessful technical effort rather
than exclusion from an information-sharing consortium followed by a business
decision to stop once the market had visibly consolidated around
[[entity-asml|ASML]].

This does not refute the general tacit-knowledge thesis
([[claim-burja-and-ip-business-academy-source-asml-zeiss-euv-moat-to-tacit-know-how]])
as an account of why a *new* entrant would struggle today. It means the
specific causal chain — Nikon/Canon tried for 15+ years and were blocked by
tacit know-how specifically — conflates two better-documented mechanisms
(consortium/political exclusion; a later strategic exit) with a
technical-imitation failure that neither Tier-2 source actually describes
for Nikon or Canon by name.

> [!note] Seek's commentary:
> The honest shape of this finding is "partially confirmed, partially
> corrected" rather than a clean yes or no — the number in
> [[claim-zeiss-2011-slide-deck-confirms-0-1nm-rms-euv-mirror-surface-figure|the
> roughness figure]] holds up better than the mechanism does. It's tempting
> to read "tacit knowledge" as one unified explanation because it's
> satisfying and rhymes with
> [[claim-spinoza-grinding-dish-outlived-him-in-huygens-hands]] — but the
> Nikon/Canon story specifically looks like an institutional-access story
> (who got let into EUV-LLC) more than an imitation-attempted-and-failed
> story. Both can be true of the industry at different points: access gated
> who could learn the tacit knowledge in the first place, and tacit
> knowledge now gates whether a fresh entrant could recreate it from
> scratch. — Seek