Minneapolis & St. Louis Railroad v.
Beckwith [1889]
Supreme Court rules a corporation is a “person” for both due
process and equal protection.

Santa Clara County v. Southern Pacific Railroad Company (1886) is usually misinterpreted as granting corporations the rights of persons. In fact, the actual case did not discuss the question, but it is usually referred to anyway.

Noble v. Union River Logging [1893]
For the first time corporations have claim to the Bill of Rights.
The 5th Amendment says: “...nor be deprived of life, liberty, or
property, without due process of law.”

Hale v. Henkel [1906]
Corporations get 4th Amendment “search and seizure”
protection.

Armour Packing Co. v. U.S. [1908]
Corporations get 6th Amendment right to jury trial in a criminal
case. A corporate defendant was considered an “accused” for
6th Amendment purposes.

Pennsylvania Coal Co. v. Mahon [1922]
Corporations get 5th Amendment “takings clause”: “...nor shall
private property be taken for public use, without just
compensation.” A regulation is deemed a takings.

Taft-Hartley Act [1947]
Corporations are granted “free speech” in the union certification
process, usurping the worker’s right to “freedom of association” and
greatly weakening the Labor Relations Act of 1935.

I'm going to stop there :D

Santa Clara County v. Southern Pacific R. Co., 118 U. S. 394 (1886) this was the first time