MCI v. AT&T
E216127
MCI v. AT&T was a landmark U.S. antitrust lawsuit in the telecommunications industry that challenged AT&T’s monopoly and helped open the long-distance market to competition.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MCI v. AT&T canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1937565 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MCI v. AT&T Context triple: [MCI Inc., notableCase, MCI v. AT&T]
-
A.
United States v. AT&T
United States v. AT&T was a landmark antitrust lawsuit in which the U.S. government forced the breakup of the Bell System telecommunications monopoly in the early 1980s.
-
B.
Lorance v. AT&T Technologies, Inc.
Lorance v. AT&T Technologies, Inc. is a 1989 U.S. Supreme Court employment discrimination case that restricted when workers could challenge discriminatory seniority systems, prompting Congress to overturn its effect through the Civil Rights Act of 1991.
-
C.
Argersinger v. Hamlin
Argersinger v. Hamlin is a 1972 U.S. Supreme Court case that extended the right to counsel to defendants in misdemeanor cases that may result in imprisonment.
-
D.
FCC v. Pacifica Foundation
FCC v. Pacifica Foundation is a landmark 1978 U.S. Supreme Court case that upheld the government's authority to regulate indecent material on public airwaves, stemming from a radio broadcast of George Carlin's "Seven Dirty Words" monologue.
-
E.
Joint Committee on 2G Spectrum
The Joint Committee on 2G Spectrum was a special parliamentary panel in India formed to investigate alleged irregularities and corruption in the allocation of 2G telecommunications spectrum licenses.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MCI v. AT&T Target entity description: MCI v. AT&T was a landmark U.S. antitrust lawsuit in the telecommunications industry that challenged AT&T’s monopoly and helped open the long-distance market to competition.
-
A.
United States v. AT&T
United States v. AT&T was a landmark antitrust lawsuit in which the U.S. government forced the breakup of the Bell System telecommunications monopoly in the early 1980s.
-
B.
Lorance v. AT&T Technologies, Inc.
Lorance v. AT&T Technologies, Inc. is a 1989 U.S. Supreme Court employment discrimination case that restricted when workers could challenge discriminatory seniority systems, prompting Congress to overturn its effect through the Civil Rights Act of 1991.
-
C.
Argersinger v. Hamlin
Argersinger v. Hamlin is a 1972 U.S. Supreme Court case that extended the right to counsel to defendants in misdemeanor cases that may result in imprisonment.
-
D.
FCC v. Pacifica Foundation
FCC v. Pacifica Foundation is a landmark 1978 U.S. Supreme Court case that upheld the government's authority to regulate indecent material on public airwaves, stemming from a radio broadcast of George Carlin's "Seven Dirty Words" monologue.
-
E.
Joint Committee on 2G Spectrum
The Joint Committee on 2G Spectrum was a special parliamentary panel in India formed to investigate alleged irregularities and corruption in the allocation of 2G telecommunications spectrum licenses.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
United States antitrust lawsuit
ⓘ
civil lawsuit ⓘ telecommunications law case ⓘ |
| allegation |
anticompetitive conduct by AT&T
ⓘ
exclusion of competitors from long-distance market ⓘ monopolization of long-distance telecommunications ⓘ |
| concernsMarket | long-distance telephone service ⓘ |
| contributedTo |
deregulation of U.S. telecommunications
ⓘ
increased competition in long-distance telephone services ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| effect |
challenged AT&T’s dominance in long-distance services
ⓘ
contributed to erosion of AT&T’s monopoly power ⓘ helped open U.S. long-distance market to competition ⓘ |
| hasDefendant | American Telephone and Telegraph Company ⓘ |
| hasPlaintiff |
MCI Inc.
ⓘ
surface form:
MCI Communications Corporation
|
| historicalSignificance |
influenced later telecommunications regulatory reforms
ⓘ
preceded breakup of the Bell System ⓘ |
| industry | telecommunications industry ⓘ |
| involvesCompany |
AT&T
ⓘ
MCI Inc. ⓘ
surface form:
MCI Communications Corporation
|
| isLandmarkCaseIn |
U.S. antitrust jurisprudence
ⓘ
telecommunications competition policy ⓘ |
| jurisdiction |
U.S. federal courts
ⓘ
surface form:
United States federal court
|
| legalArea |
antitrust law
ⓘ
competition law ⓘ |
| relatedCase | United States v. AT&T ⓘ |
| relatedConcept |
AT&T monopoly
ⓘ
Bell System ⓘ telecommunications deregulation in the United States ⓘ |
| relatedToLaw |
Sherman Antitrust Act
ⓘ
United States antitrust law ⓘ
surface form:
United States antitrust statutes
|
| subjectMatter |
access to long-distance networks
ⓘ
interconnection rights for competing carriers ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: MCI v. AT&T Description of subject: MCI v. AT&T was a landmark U.S. antitrust lawsuit in the telecommunications industry that challenged AT&T’s monopoly and helped open the long-distance market to competition.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.