Appellant Tingley Systems, Inc. (“Ting-ley”) appeals, from the district court’s orders in two consolidated cases. Tingley brought suit against appellee Bay State *176 Health Management, Inc. (“Bay State”) 1 and its parent, appellee Blue Cross and Blue Shield of Massachusetts (“BCBSMA”), for breach of contract, fraud, misappropriation of trade secrets, and copyright infringement. After learning of facts that allegedly implicate appel-lee CSC Consulting, Inc. (“CSC”) as a co-perpetrator in this conduct, Tingley filed a new complaint against CSC and consolidated that case with the case against Bay State into “one proceeding.” Tingley and Bay State settled the claims raised in the first complaint and stipulated to dismiss the first action with prejudice. Upon motion by CSC, the district court then entered summary judgment against Tingley in the second action, finding it barred by the res judicata effect of the dismissal of the first action. Tingley sought to have the judgment in the first action modified to preserve the claims of the second action, but the district court denied Tingley’s motion, despite what the district court termed a “harsh result.” Tingley appeals, and we reverse.
BACKGROUND
Bay State is a Boston, Massachusetts-based health care maintenance organization (“HMO”). Tingley is a Florida corporation which creates, supports, and distributes computer software for the HMO industry. In a licensing agreement dated March 14, 1989, Tingley licensed computer software to Bay State for Bay State’s own internal use. The licensing agreement contained strict confidentiality requirements and prohibited Bay State from providing any third party with access to the Tingley software.
In 1990, Bay State created three software packages that allegedly incorporated the file structure and source code of the Tingley software. The resulting dispute over ownership of these software packages led Bay State to sue Tingley on June 14, 1993 in the United States District Court for the District of Massachusetts. In response, Tingley immediately sued Bay State in the United States District Court for the Middle District of Florida. In the Florida action, Tingley alleged that Bay State breached the licensing agreement and misappropriated trade secrets by disclosing Tingley’s proprietary material to consultants during the creation of the software packages. The Florida action was transferred to the District of Massachusetts, and on December 17, 1993, the district court consolidated the two cases into Civil Case No. 97-1574 (“the Bay State cases”). Tingley later amended the complaint to add BCBSMA as a defendant and to allege causes of action for copyright infringement and fraud.
Tingley claims that, during discovery, it learned that CSC performed consulting services on one of Bay State’s software package projects. In mid-December of 1994, after several delays and subpoenas, Tingley obtained several weekly status reports that were prepared by CSC consultants in connection with the Bay State software project. According to Tingley, those status reports revealed that one of the CSC consultants, Vicki Gifford, obtained the Tingley trade secret file layouts, studied them, and then loaded them into the software that CSC was creating for Bay State. Upon receiving this information, Tingley immediately moved to extend the discovery cutoff in the Bay State cases, but the motion was denied.
On February 9,1995, Tingley filed a new action against CSC (“the CSC case”), claiming: (1) misappropriation of trade secrets; (2) copyright infringement; (3) unfair competition; (4) tortious interference with the licensing agreement and Tingley’s business relationship with Bay State; and (5) conspiracy with Bay State to misappropriate Tingley’s trade secrets and copy Tingley’s software. On July 11, 1995, *177 upon motion by Tingley, Magistrate Judge Marianne B. Bowler consolidated the CSC case and the Bay State cases into “one proceeding.” On July 28, 1995, Tingley filed a second amended complaint in the Bay State cases, including nine additional allegations of fraud against Bay State. The amended complaint captioned the Bay State and CSC cases, but only amended the claims against Bay State.
In September of 1995, Tingley and Bay State reached a settlement in the Bay State cases. A stipulation and order of dismissal was signed by the parties and entered by the court on September 11, 1995. The order captioned both the Bay State and CSC cases, but dismissed only the Bay State cases.
On October 17, 1995, CSC filed a motion for summary judgment in the CSC case on the basis of res judicata, claiming that the September 11, 1995 order of dismissal of the Bay State cases barred all of Tingley’s claims against CSC. Tingley opposed this motion and alternatively moved for limited relief from judgment in the Bay State cases. The district court granted CSC’s motion for summary judgment in the CSC case and denied Tingley’s motion for limited relief from judgment in the Bay State cases. Tingley now appeals both rulings.
DISCUSSION
We turn first to Tingley’s appeal of the grant of summary judgment in favor of CSC. We review a grant of summary judgment on res judicata grounds
de novo. See Porn v. National Grange Mut. Ins. Co.,
Under federal law, a final judgment on the merits of an action precludes the parties from relitigating claims that were raised or could have been raised in that action.
See id.
at 34 (citing
Allen v. McCurry,
The district court held that the dismissal of the Bay State cases with prejudice constitutes a “final judgment on the merits” for res judicata purposes. The district court cited two First Circuit cases in stating that: (1) cases consolidated for purposes of convenience and judicial efficiency retain their separate identities, and (2) final judgments rendered in each individual action are final judgments.
See Tingley Sys., Inc. v. CSC Consulting, Inc.,
Tingley does not dispute the finality of the resolution of the Bay State cases, but claims that there was no final judgment on the merits in a separate action because the Bay State cases and the CSC case should be treated as a single action for res judica-ta purposes. If the cases are treated as a single action, the dismissal of the claims against Bay State would be treated as a dismissal of all claims against CSC’s “co-defendants” and therefore would have no preclusive effect on the claims against CSC.
At the outset, we note that there is no doubt that the Bay State cases and the CSC case are technically separate actions.
See Johnson v. Manhattan Ry. Co.,
We agree with Tingley that we are not bound by the statements in
Massachusetts Helicopter
and
Caledonia Investment
in making this decision. Those eases dealt with the question of whether an order terminating one of two or more consolidated cases is appealable absent a certification pursuant to Fed.R.Civ.P. Rule 54(b). Rule 54(b) provides that, when an action presents more than one claim for relief or when multiple parties are involved, the district court may direct the entry of final judgment as to less than all of the claims or parties. — and therefore allow a separate appeal — if it finds that there is no just reason for delay.
See
Fed.R.Civ.P. 54(b). In
Massachusetts Helicopter,
we held that consolidated cases retain their separateness for purposes of appeal and therefore the district court need not issue such a Rule 54(b) certification to allow an appeal from the termination of one of the consolidated cases.
See Massachusetts Helicopter,
The question presented in Massachusetts Helicopter bears little on the question of whether the termination of one of the consolidated cases should preclude further proceedings in the remaining case or cases. The idea that consolidated cases maintain their separateness for purposes of determining their appealability is not inconsistent with treating those consolidated cases as a single action for res judicata purposes. The fact that certain claims are separate enough to be appealed separately does not mean that the claims are separate enough to preclude all other similar claims on res judicata grounds. For example, if a district court dismisses claims against one of several co-defendants in a particular non-consolidated case, the court may certify that dismissal as an immediately and separately appealable final judgment. See Fed.R.Civ.P. 54(b). Yet there is no suggestion that the court’s certification of the appealability (and therefore the separateness) of this portion of the case somehow forever precludes further litigation of the rest of the case. Therefore, while Massachusetts Helicopter provides the rule of this circuit regarding the separateness of consolidated cases for the one purpose of appeal, 2 it does not bar us, from accepting Tingley’s invitation to treat the Bay State cases and the CSC case as a single action for res judicata purposes. 3
*179
Tingley cites opinions of other courts that it claims have addressed the separateness issue in the res judicata context. While most miss the.mark, one is at least marginally helpful to Tingley. In
Chase Manhattan Bank, N.A. v. Celotex Corp.,
CSC responds by citing
Robinson v. Worthington,
Notwithstanding the paucity of authority cited by the parties on this question, we believe that the Bay State cases and the CSC case should be treated as a single action for res judicata purposes. We can find no circuit opinion in which the first of two consolidated cases to be resolved was found to have a res judicata effect on the other.
4
However, we have found a very recent Second Circuit case, not cited by the parties, in which a plaintiff with two closely related actions pending before the same district judge at the same time was spared the potentially punitive res judicata effect of the entry of judgment in the first action. In
Devlin v. Transportation Communications Int’l Union,
The Second Circuit vacated the district court’s application of res judicata.
See Devlin,
It is possible to limit the holding of the Devlin opinion by finding that it vacated the application of res judicata based on the fact that the judgment in Devlin I was reversed and the case reopened, but we believe that to be an incorrect reading. From the court’s extensive analysis, it is clear that the Second Circuit found that res judicata was not appropriate in such a situation and contemplated that consolidation below would cure any future similar problems. The situation at bar is quite analogous in that the actions were closely related and pending before the same judge at the same time. Like the plaintiffs in Devlin, Tingley did not wait until the termination of the first case to commence the second case. Like the plaintiffs in Devlin, Tingley could have chosen to assert its new claims in the existing action, but instead chose to file a new action. The present situation is even more favorable to Tingley than was the situation in Devlin because Tingley’s cases were consolidated. Tingley actively sought to bring the case to the attention of the district court to have it consolidated with the Bay State cases. As a result, we find, as did the Devlin court, that res judicata is inapplicable to bar the later-filed action. 5
For other reasons as well, we do not believe that Tingley should be “hoisted with [its] own procedural petard.” Res judicata is a judge-made doctrine resting on policy considerations,
see Diversified Foods, Inc. v. First Nat’l Bank of Boston,
In addition to these policy concerns, equitable considerations favor treating the consolidated cases as a single action for res judicata purposes. We agree with Tingley that, for all practical purposes, CSC and Bay State were co-defendants in a single lawsuit. Until the time of the settlement in the Bay State eases, the court treated the actions as one lawsuit with claims against multiple defendants. See, e.g., July 17, 1995 Transcript, at 43 (magistrate’s statement that “this is consolidated” and that “[i]t’s one big case in the eyes of the Court”). The only difference between the present situation and a single lawsuit with multiple claims is that Tingley chose to list its causes of action against CSC in a new complaint, rather than in an amended complaint in the Bay State cases. Tingley could 'easily have done the latter if it had known that it risked res judicata preclusion, but Ting-ley’s July 28, 1995 second amended complaint instead amended only the claims against Bay State. Equity demands that we not allow such a draconian result to turn on this procedural quirk.
There are accusations that Tingley filed the new complaint in order to avoid discovery deadlines in the Bay State cases, but even if those accusations are true, we do not believe that total preclusion of Ting-ley’s claims against CSC is the proper punishment, if any punishment is appropriate. Tingley found out about CSC’s involvement in the alleged wrongdoing very late in discovery in its case against Bay State. According to CSC and the district court, Tingley’s alternatives were: (1) to amend its Bay State complaint to add claims against CSC, but proceed without discovery on those claims, or (2) to file a new action against CSC that would be precluded if Bay State chose to settle. Forcing Tingley to choose between those alternatives is not equitable, when neither alternative gave Tingley the opportunity to fully investigate and litigate its newly-discovered claims against CSC. In sum, we are persuaded by the Second Circuit’s decision in Devlin, the policy concerns surrounding the res judicata doctrine, and equitable considerations that, at least in the limited circumstances presented here, the consolidated cases should have been treated as a single action for res judicata purposes. Consequently, the first element of the res judicata standard is not satisfied. There was no final judgment on the merits in an earlier action; there was only a final judgment on a portion of the aggregate case. Therefore, the application of res judicata in this case was inappropriate. We need proceed no further. 7
*183 CONCLUSION
Based on the foregoing, the district court’s entry of summary judgment in favor of CSC on Tingley’s claims against it is REVERSED, and the CSC case is REMANDED to the district court for further proceedings. We DISMISS as moot Ting-ley’s appeal from the district court’s denial of its motion for relief from judgment in the Bay State cases.
Notes
. At the time the relevant actions were filed, Bay Slate was known as Bay State HMO Management, Inc.
. We note that other circuits have taken the opposite position and treated consolidated cases as a single action for purposes of ap-pealability, thus requiring a Rule 54(b) certification before the termination of one of the cases may be appealed.
See, e.g., Trinity Broad. Corp. v. Eller,
. Tingley also offers a second basis for distinguishing
Massachusetts Helicopter.
Tingley argues that
Massachusetts Helicopter
is limited to cases consolidated for purposes of convenience and judicial efficiency and does not apply to cases that are consolidated for all purposes. The
Massachusetts Helicopter
court left open the possibility that actions
*179
could be consolidated into one action and therefore lose their separateness.
See Massachusetts Helicopter,
There are two relevant types of consolidations: (1) those in which separate actions are combined into one action and lose their separate identities, and (2) those in which separate actions are to be tried together but each retains its separate character and requires the entry of a separate judgment.
See Ivanov-McPhee v. Washington Nat’l Ins. Co.,
Even so, it is not at all clear which type of consolidation occurred here. The magistrate judge stated that the cases would be consolidated into “one proceeding,” creating the possibility that this was the type of complete consolidation that Massachusetts Helicopter declined to address. However, the magistrate judge's reasons for consolidating the Bay State and CSC cases were based largely upon convenience and efficiency. Additionally, the cases retained certain aspects of separateness, including separate case numbers and docket sheets. Because of this ambiguity, we do not join Tingley in distinguishing Massachusetts Helicopter from the present facts on this additional basis. Rather, we accept this limitation on Massachusetts Helicopter for what it is: recognition that consolidated cases may not necessarily retain their technical separateness in all instances and for all purposes.
. We did find a district court opinion from the Southern District of Georgia in which the court found the legal effect of a consolidation in this context to be “little more than a procedural curiosity.”
Booth v. Quantum Cham. Corp.,
. In addition to the holding in
Devlin,
we have found several cases that have suggested or assumed that consolidation precludes the use of the doctrine of res judicata to bar one action when the other action is resolved first.
See, e.g., Langston v. Insurance Co. of N. Am..,
. To the contrary, it is CSC's proposed res judicata rule that would waste judicial resources. Such a rule would discourage litigants from entering into partial settlements in consolidated cases. Plaintiffs would instead *182 litigate all claims against all parties to the end.
. We need not address Tingley's appeal of the denial of its motion for relief from judgment in the Bay State cases, as that appeal has been mooted. Tingley sought relief from judgment to avoid the res judicata effect of the stipulated dismissal in the Bay Stale cases, but we have already found that there is no res judicata effect.
