OPINION OF THE COURT
Plaintiffs’ complaint in this action brought under the provisions of the Donnelly Act (General Business Law, §§ 340-347) alleging violation by defendants and New York Telephone Company (NYT) of the antitrust proscriptions of that act is not precluded by the Public Service Commission’s prior dismissal of plaintiffs’ complaint to that body pursuant to section 91 of the Public Service Law alleging discriminatory activity by the New York Telephone Company. There having been no hearing before the commission (PSC) and the issues to be determined in the Donnelly Act action being neither identical with the issues under section 91 nor necessarily determined in the prior proceeding
Capital Telephone Company (Capital) is a radio common carrier which provides one-way paging and two-way mobile radio service. Peter A. Bakal is president of Capital but also provides through his own solely owned company similar regulated common carrier service. Pattersonville Telephone Company (Pattersonville) competes with Capital and Bakal in offering one-way paging and two-way mobile radio service but also operates a regular landline telephone service. By letter dated May 26, 1978, Capital and Bakal complained to the PSC that the New York Telephone Company had refused them services which NYT was providing to Pattersonville without charge and denying to them a revenue sharing arrangement which was afforded to Pattersonville. Capital and Bakal therefore asked for an order requiring that they and Pattersonville be treated equally by NYT.
After receiving a written report from its communications division stating that NYT in 1976 had terminated the revenue sharing arrangement, differentiating between Capital and Bakal, as radio telephone utilities, and Pattersonville, as a radio and landline telephone service, and stating that NYT’s charges to Capital and Bakal were at the same rate charged by NYT to competing radio carriers and not discriminatory, the PSC declined to issue the requested order.
While the PSC complaint was pending, Capital and Bakal began this action against Pattersonville and Robert A. Dowling, its president. In three causes of action it alleges conspiracy of defendants and NYT relating to divi
Before this court defendants argue that (1) the PSC determination bars the entire action on principles of collateral estoppel, (2) the complaint challenges the propriety of tariffs as to which the PSC has exclusive original jurisdiction, (3) the technical nature of the issues requires abstention by the courts under the doctrine of primary jurisdiction, and (4) the PSC and NYT are necessary parties to the action.
I
Collateral estoppel (or issue preclusion as is its more modern name,
see Matter of American Ins. Co.
[Messinger—
Aetna Cas. & Sur.
Co.],
A
The fact that the charges made by NYT and Patterson-ville are based upon tariffs filed by those public utilities does not protect the utilities or others acting in combination with them from antitrust liability
(Columbia Gas of N. Y. v New York State Elec. & Gas Corp.,
The question before the PSC was whether under section 91 of the Public Service Law the charge made by NYT to plaintiffs was an “unjust or unreasonable charge” (subd 1), “greater or less compensation for any service rendered” than that charged or received from any other person for “a like and contemporaneous service” (subd 2) or gave “any undue or unreasonable preference or advantage to any person, corporation or locality” (subd 3). The question to be decided by the court in this Donnelly Act action is whether “[cjompetition or the free exercise of any activity * * * in the furnishing of any service * * * is or may be restrained”
The distinction between the issues under the two statutes is placed in perspective by reference to
State of New York v Mobil Oil Corp.
(
Thus, the issues overlap but are not identical, for in each there is an element not present in the other.
B
Nor can it be said that the issue was “necessarily decided” in the prior proceeding. First, it is not the function of the PSC to enforce State antitrust laws
(Matter of Tele/Re
C
Finally, the record convincingly demonstrates that plaintiffs did not have a full and fair opportunity to contest the issue before the PSC. The only paper before the PSC was plaintiffs’ letter of complaint. As noted, the complaint was referred to the communications division which so far as appears obtained the information in its report by reviewing commission records and by consultation with a
For all of the above reasons, plaintiffs’ Donnelly Act claim is not precluded by the prior PSC determination.
II
The other side of defendants’ contention that antitrust claims were necessarily ruled upon by the PSC is its argument that, because the first and part of the third cause of action challenge the reasonableness of Pattersonville’s tariffs, the matter is one over which the PSC has exclusive original jurisdiction re viewable only in an article 78 proceeding. Were the challenge to the reasonableness of Pattersonville’s tariffs as distinct from the preferential application of NYT’s tariff and were it made by a customer rather than a competitor, there might be merit to the argument (compare
Van Dussen-Storto Motor Inn v Rochester Tel. Corp.,
III
Defendant’s primary jurisdiction argument is predicated upon the technical nature of the services and rebating practices which must be considered. The doctrine of primary jurisdiction is intended to co-ordinate the relationship between courts and administrative agencies to the end that divergence of opinion between them not render ineffective the statutes with which both are concerned, and to the extent that the matter before the court is within the agency’s specialized field, to make available to the court in reaching its judgment the agency’s views concerning not only the factual and technical issues involved but also the scope and meaning of the statute administered by the agency
(Hewitt v New York, New Haven & Hartford R. R. Co.,
IV
Defendants’ answer and motion papers raised the question whether the PSC was a necessary party, but defendants have made no motion based on the nonjoinder of NYT. The latter question is, therefore, not properly before us. Defendants argue without citation of authority that the PSC is a necessary party because a judgment in this action would require a change in the tariff approved by the commission. But to the extent that that may be so, it is simply a necessary concomitant of the rule that regulatory agency approval of tariffs does not immunize a utility from antitrust liability. Moreover, the PSC will have full opportunity to consider any change in tariff rates that may be sought by NYT or Pattersonville as a result of the judgment in this action when application for such a change is made to it.
The order of the Appellate Division should, therefore, be affirmed, with costs, and the question certified should be answered in the affirmative.
Chief Judge Cooke and Judges Jasen, Jones and Wachtler concur; Judges Gabrielli and Fuchsberg taking no part.
Order affirmed, etc.
