zone of equivalence

zone of equivalence

a region of an antibody-antigen reaction in which concentrations of both reactants are equal.

zone of e·quiv·a·lence

(zōn ē-kwiv'ă-lĕns)
Portion of a precipitin or agglutination curve when antibody and antigen concentrations are optimal for lattice formation.
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References in periodicals archive ?
The issue in these cases has been what should be the allowable zone of equivalence for patent claims that have been amended during patent prosecution.
Basically, it says that, when you amend a claim to make it narrower, you can no longer claim the territory you gave up as part of your zone of equivalence.
If your competitors have patents whose zone of equivalence is important to you for any reason, it would be worth reviewing them under the new standard.