Account

Sign in to access your account and subscription

On-Sale Bar By Upgrade? An Invention May Be Put On-Sale By a Contract Made Before the Date of Invention

A straightforward reading of the existing on-sale bar law suggests that companies and inventors, particularly in the software industry, may be unwittingly putting their inventions on sale by agreeing to deliver future improvements or versions of their product to their customers. This is a consequence of the initially counterintuitive principle that an invention may be put on sale by a contract or offer made before the invention even exists. This principle will often apply in the context of 'upgrade' contracts, where a seller contracts, at the time of a sale, to provide future 'upgrades' to a product. In that situation, the seller's pre-existing obligation to provide the invention as an 'upgrade' can put the invention on sale, even though the obligation arose before the invention was conceived.

26 minute read April 28, 2006 at 11:52 AM
By
Nicholas A. Brown
On-Sale Bar By Upgrade? An Invention May Be Put On-Sale By a Contract Made Before the Date of Invention

A straightforward reading of the existing on-sale bar law suggests that companies and inventors, particularly in the software industry, may be unwittingly putting their inventions on sale by agreeing to deliver future improvements or versions of their product to their customers.

This premium content is locked for LawJournalNewsletters subscribers only

ENJOY UNLIMITED ACCESS TO THE SINGLE SOURCE OF OBJECTIVE LEGAL ANALYSIS, PRACTICAL INSIGHTS, AND NEWS IN LawJournalNewsletters

  • Stay current on the latest information, rulings, regulations, and trends
  • Includes practical, must-have information on copyrights, royalties, AI, and more
  • Tap into expert guidance from top entertainment lawyers and experts

Already have an account? Sign In Now

For enterprise-wide or corporate access, please contact Customer Service at [email protected] or call 1-877-256-2473.

NOT FOR REPRINT

© 2026 ALM Global, LLC, All Rights Reserved. Request academic re-use from www.copyright.com. All other uses, submit a request to [email protected]. For more information visit Asset & Logo Licensing.

Continue Reading

Adverse Possessor Provided Insufficient Evidence to Support TackingTown’s Installation of Guardrails Did Not Constitute a TakingMortgagee Entitled to Deficiency JudgmentLandowner Adequately Alleged Trespass During Renovation

August 13, 2026

Agentic AI introduces risks that are novel and complex, but the most effective response is a familiar one. Zero Trust answers the problem of when an AI agent misfires on its own by constraining what an agent can do rather than betting on how it will behave.

August 01, 2026