US 7404202
Forward Citations
How External Hardware Keys Secure Digital Purchases and Downloads
Patents that cite US 7404202 — inventions that reference this patent as foundational prior art in their own applications. High forward citation counts indicate an influential patent.
CITED BY
16 patents
IN PATENTLENS
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Citation network
This patent has been cited by 16 later patents. Citation detail pages are being built out in Phase 2.
Forward citation data is sourced from the USPTO patent database. Only patents indexed in PatentBrief are shown as links.