I.
The Procter & Gamble Company (“P & G”) institutеd this action on January 24, 1994, alleging that Paragon Trade Brands, Inc. (“Paragon”), infringed certain P & G patents by making, selling and/or using disposable baby diapers having dual leg cuffs. Paragon filed its Answer and Counterclaims on April 20, 1994. Paragon’s Second Counterclaim alleged that P & G infringed upon the Pieniak et al. United States Patent No. 5,098,423 (“’423 Patent”). (Docket Item “D.I.” 146 at A154-55). Pending before the court is P & G’s Motion for Summary Judgment Dismissing Paragon’s Patent Infringement Counterclaim for Lack of Standing (D.I. 144). In addition to a lack of standing, P & G asserts that the counterclaim should be dismissed under Fed.R.Civ.P. 19 for failure to join an indispensable party.
II.
A federal court is obligated to examine its jurisdiction. Standing is a “threshold question in every federal ease, determining the power of the court to entertain the suit.”
Pfizer Inc. v. Elan Pharmaceutical Research Corp.,
The party seeking jurisdiction bears the burden to establish that it is a proper party to invoke judicial resolution of the dispute.
FW/PBS, Inc. v. City of Dallas,
It is undisputed that on April 20, 1994, Paragon was not the owner of the ’423 Patent, 1 but was a sublicensee. 2 (D.I. 148 at *308 1); (D.I. 145 at 21)., In the counterclaim, Paragon alleged that it was “an exclusive sublicensee under the ’423 Patent with respect to the manufacture, use and sale of infant diapers.” (D.I. 146 at A154-55).
Paragon does not rely on its sublicense to support its standing. 3 Paragon argued in opposition to the pending motion:
At the time of the counterclaim, April 20, 1994, Paragon was an exclusive sublicensee under the ’423 patent with an undеrstanding that it would soon become the owner. It did become the owner of the ’423 patent by Agreement dated May 4, 1994. 4 The Agreement and its included Assignment provided for the transfer of the “essential rights” to the ’423 patent.
(D.I. 148 at 1) (emphasis in original). Paragon relies on the subsequent assignment to support its standing to maintain its Second Counterclaim for infringement of the ’423 Patent.
Paragon makes threе arguments in support of its position. First, Paragon asserts that as an assignee of the entire interest in a patent, including the right to recover for past infringement, it has standing to maintain a suit for infringement, regardless of the date its interest was obtained. (D.I. 148 at 10). Second, Paragon argues that even if it had no standing on the date the counterclaim was made, any “defect” in standing was “cured” whеn it received an assignment with a right to recover for past infringement. (D.I. 148 at 10). Third, Paragon argues that it was the “equitable owner” of the ’423 Patent on the day that the counterclaim was filed because by April 20, 1994, “all concerned parties” had agreed to assign their rights in the patent to Paragon. (D.I. 148 at 13). 5
*309
Paragon’s third argument is without merit. An assignment is effective only if it is in writing. 35 U.S.C. § 261;
United States v. Solomon,
According to 35 U.S.C. § 281, a civil action for patent infringement may be brought by “a patentee.” The word “patentee” is defined by statute to “inelude[] not only the patentee to whom the patent was issued but' also the successors in title to the patentee.” 35 U.S.C. § 100(d). The general rule is that a party seeking money damages for patent infringement must have held legal title to the patent during the time of the infringement.
Arachnid, Inc. v. Merit Indus., Inc.,
This does not address, however, whether a party claiming infringement must have standing to bring the claim at the time it is pled. That question has been considered in a number of cases.
See Switzer Bros., Inc. v. Byrne,
Some courts have held that a party’s standing to maintain a patent infringement claim is determined by that party’s rights on the day the claim was filed.
See Switzer Bros.,
Other cases present compelling policy rationales for the opposite position. Those courts have found that not allowing subsequent developments to cure defects in plead
*310
ing would be to “exalt form over substance.”
Valmet,
As a general matter, parties should possess rights before seeking to have them vindicated in court. Allowing a subsequent assignment to automatically cure a standing defect would unjustifiably expand the number of people who are statutorily authorized to sue. Parties could justify the premature initiation of an action by averring to the court that their standing through assignment is imminent. Permitting non-owners and licensees the right to sue, so long as they eventually obtain the rights they seek to have redressed, would enmesh the judiciary in abstract disputes, risk multiple litigation, and provide incentives for parties to obtain assignments in order to expand their arsenal and the scope of litigation. Inevitably, delay and expense would be the order of the day. The court agrees, thereforе, that a party must have standing to bring a patent infringement claim at the time it is brought.
See Minneapolis & St. Louis R.R. Co. v. Peoria & Pekin Union Ry. Co.,
An initial defect in standing, however, is remediable.
See Hockerson-Halberstadt,
Federal Rule of Civil Procedure 19 also provides an affirmative cure for some patent infringement claimants who do not have standing initially.
See, e.g., Control Compo
*311
nents, Inc. v. Atlantic Richfield Co.,
Here, the defect is not the absence of an indispensable party, as will be discussed below, but Paragon’s failure to properly assert standing as an assignee. The lack of standing is not automatically cured by a subsequent assignment. Rather, Paragon must move to amend its answer to assert facts that give it standing to maintain the patent infringement claim. Paragon has not yet moved this court to amend its answer.
Cf. Solarex Corp. v. Arco Solar, Inc.,
This court’s decision that the dismissal will be without prejudice is not uniformly supported by precedent. The Sixth Circuit affirmed the district court’s dismissal of
Switzer Bros,
with prejudice.
The better practice in most circumstances is to dismiss the claim without prejudice. A decision regarding standing is not a decision on the merits. When a party is dismissed on the basis of standing it generally should not be barred from properly litigating the issue once it obtains standing. 10
III.
P & G has moved to dismiss the Second Counterclaim not only on the basis of stand
*312
ing, but also for failurе to join an indispensable party under Fed.R.Civ.P. 19. The party that is allegedly indispensable is Johnson & Johnson (“J & J”), which P & G equates with J & , J’s subsidiary McNeil-PPC, Inc., (“PPC”), the owner of the patent at the time the counterclaim was brought. P & G quotes this court’s decision in
Pfizer Inc.,
Contrary to the approach in determining standing questions, the question of whether a party is necessary or indispensable under Fed.R.Civ.P. 19 is tested by looking at the status of the parties at the current time rather than at the time the clаim is filed.
Terrebonne Land Dev. Corp. v. Superior Oil Co.,
P & G argues that J & J and PPC are necessary parties because their absence “may prejudice P & G by subjecting P & G to the risk of liability” that would be inconsistent with an Arbitration Agreement it entered with PPC on February 15, 1993. (D.I. 146 at 27). Under paragraph 1.4 of the Arbitration Agreement, PPC waived any potential infringement claims against P & G relating to the manufacture, usе and sale of “Current Diaper Products,” which consisted of P & G’s current PAMPERS and LUVS disposable diapers, and current ATTENDS briefs and incontinence products. (D.I. 146 at A127-28). Paragon argued in its brief that its counterclaim for infringement did not include these Current Diaper Products. Paragon also asserted that it would not be bound by the Arbitration Agreement. (D.I. 148 at 18-20).
P & G is not so prejudiced by the absence of J & J and PPC that “complete relief cannot be acсorded among those already parties.”
See
Fed.R.Civ.P. 19(a). If Paragon chooses to seek leave of court to file a patent infringement counterclaim, and if such leave is granted, and if the counterclaim asserts that the “Current Diaper Products” referred to in the Arbitration Agreement infringe, then P & G can plead, if it so chooses, the Arbitration Agreement as a defense tо that counterclaim. If after these contingencies are resolved it is shown that J & J or PPC is a necessary party to this action, then P & G can seek its joinder. Currently, however, J
&
J and PPC are not necessary parties. A party that is not necessary under Fed. R.Civ.P. 19(a) cannot be indispensable under Fed.R.Civ.P. 19(b).
Janney Montgomery Scott, Inc. v. Shepard Niles, Inc.,
11 F.3d
*313
399, 405 (3d Cir.1993);
Vaupel,
IV.
On April 20, 1994, Paragon did not have standing to bring the Second Counterclaim for infringement without joining the patent owner. The subsequent assignment of the ’423 Patent to Paragon does not automatically cure that initial defect in standing. Paragon has not moved the court to amend its answer to cure the defect in standing. Therefore, the Second Counterclaim will be dismissed without prejudice.
Paragon is now the assignee of the ’423 Patent. J & J and PPC have no substantial rights left in the ’423 Patent. They are not necessary or indispensable parties to this litigation on the basis of their prior ownership of the patent. Furthermore, P & G has fаiled to show that its rights are prejudiced by the absence of J & J and PPC. As a result, the dismissal of the Second Counterclaim will not be based on the failure to join an indispensable party.
Notes
. McNeil-PPC, Inc., a subsidiary of Johnson & Johnson, owned the ’423 Patent at the time of the counterclaim, and apparently is still the owner. Weyerhaeuser Company obtained an exclusive license to utilize the technology included in the '423 Patent throughout most of the world. The exclusive license included the right to grant sublicenses. (D.I. 146 at A17).
. Paragon received á 'sublicense from Weyer-haeuser Company. The sublicense did not trans
*308
fer the "essential rights to the patent” that are necessary to sue for infringement.
See Pfizer Inc. v. Elan Phannaceutical Research Corp.,
.It is well-settled that an exclusive licensee who does not possess the essential rights of the patent has no standing to assert a patent infringement claim in its own name without joining the owner of the patent.
See Independent Wireless Telegraph Co. v. Radio Corp. of America,
. The assignment appears not to have been executed until August 18, 1994. (D.I. 146 at A185). Apparently, the assignment was not recorded in the United States Patent and Trademark Office until September 12, 1994. (D.I. 146 at A184). While there may be a dispute of fact regarding the effective date of the assignment, that dispute is immaterial because it is certain that the assignment took plаce after April 20, 1994, the date that the counterclaim was filed.
. In addition to these three arguments in support of its standing, Paragon asserts that P & G should be judicially estopped from challenging Paragon’s standing because P & G’s positions in this case contradict P & G's positions in
Procter & Gamble Co. v. Kimberly-Clark Corp.,
. Paragon has sued for money damages and equitable relief. (D.I. 146 at A157). In such mixed claims, it is proper to treat the action as one at law.
See Pfizer,
. In
Valmet,
. The facts of the
Peoria
case are instructive. On August 6, 1925, the plaintiffs sought an injunction to enjoin the defendant from refusing to switch railroad cars for them. The basis of the suit was an Order issued on April 13, 1922, by the Interstate Commerce Commission requiring defendant to switch the cars. The district court dismissed the case for lack of jurisdiction because the Interstate Commerce Commission order was not in effect when the action was brought.
Id.
at 582,
This decision should be contrasted with more recent precedent concerning ripeness.
See Regional Rail Reorganization Cases,
. Fed.R.Civ.P. 41(b) provides in relevant part: "Unlеss the court in its order for dismissal otherwise specifies, a dismissal under this subdivision and any dismissal not provided for in this rule, other than a dismissal for lack of jurisdiction, for improper venue, or for failure to join a party under Rule 19, operates as an adjudication upon the merits.” The court in Quiedan based its decision on standing, not on any failure to join an indispensable party. Therefore, the dismissаl was with prejudice.
. Dismissal of the counterclaim without prejudice does not foreclose a subsequent finding that the infringement claim was a compulsory counterclaim and should have been brought in this litigation. If Paragon decides not to seek to amend its answer, but to assert the infringement claim in a later action, it does so at its own peril. Cf. Fed.R.Civ.P. 13(a) and 13(e).
. J & J and PPC are not even propеr parties. When rights to a patent are effectively assigned, the assignor retains no further rights in that which was assigned and as a result has no stake in the outcome of the litigation.
Aluminum Co. of America v. Norton Co.,
