25 Ill. 2d 181 - KALPLAN v. Kaplan’s Empirical Analysis
1962
Citation profile
16 federal appellate · 2 district · 73 state decisions
How this case has been cited
Cited by 119 later decisions — most recently March 2023 · most notably 97 Ill. App. 3d 809 - Alexander v. Standard Oil Co. (1981), Havoco of America, Ltd. v. Sumitomo Corp. of America (1992)
16 federal appellate · 2 district · 73 state decisions
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Relationships
Relies on 17 Ill. 2d 439 - Guyton v. Guyton · 14 Ill. 2d 295 - James v. James · 37 Cal. 2d 174 - Schumm v. Berg · Illinois Merchants Trust Co. v. Harvey · Seuss v. Schukat
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 119 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
““This allegation clearly presents no basis for a claim of duress inasmuch as it is well established that it is not duress to institute or threaten to institute civil suits, or for a person to declare that he intends to use the courts to insist upon what he believes to be his legal rights, at least where the threatened action is made in the honest belief that a good cause of action exists, and does not involve some actual or threatened abuse of process.””
4 later decisions quote this exact passage · from the majority“'bereft of the quality of mind essential to the making of a contract,'”
4 later decisions quote this exact passage · from the majority“a condition where one is induced by a wrongful act or threat of another to make a contract under circumstances which deprive him of the exercise of his free will”
3 later decisions quote this exact passage · from the majority
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.