October Term 2001 · Docket 99-1996

Can plant varieties receive utility patents under general patent law?

the sides that brought the case argue utility patents on plant varieties are invalid. the opposing sides defend their validity under general patent law.

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J. E. M. Ag Supply, Inc. v. Pioneer Hi-Bred International, Inc.
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Verified source milestones

  1. — An official oral-argument transcript was verified.

The arguments, in order

This case may have been argued more than once. Each entry below uses that session's official transcript. Later arguments do not erase earlier ones.

  1. Argument 1 ·

    What happened at the argument

    Mr. Wallace noted the Plant Patent Act influenced prior debates.

    Mr. Johnson argued the patents issued under section 101 are invalid.

    Chief Justice Rehnquist called the case submitted.

    Read the official transcript for this argument · Official argument details

    Sources used for this argument breakdown

A citizen's guide to the whole case

What this case is about

This case tests whether general patent law covers plant varieties. the sides that brought the case seek to invalidate specific patents. the opposing sides defend those patents.

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How the case got here

The Supreme Court heard oral argument in this case on October 3, 2001.

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What each side wants

the sides that brought the case want the Court to declare the plant variety patents invalid.

the opposing sides want the Court to uphold the validity of the plant variety patents.

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What each side says

the sides that brought the case argue section 101 does not cover these plant varieties.

the opposing sides argue section 101 covers these plant varieties.

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What the justices asked

Does general patent law cover plant varieties?

Are the specific patents in this case valid?

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Why it matters

The outcome defines the scope of patent protection for agricultural products. It affects how breeders secure rights to new plant varieties.

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What happens next

This article currently covers the argument record. Use the official docket link for later case activity.

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Official Court provenance

Official docket and case history · Official Supreme Court oral-argument detail page

Title and summary sources

Revision history

  1. Revision 1 · Official Transcript ·

    Correction: Rewritten to the concise citizen-facing editorial standard.

  2. Revision 2 · Official Transcript ·

    Correction: Migrated to the dated official Court activity contract without model use.

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