This is аn appeal from the denial of an injunction. Defendant-appellee, Milgo, a Florida corporation, owner of certain patents, brought suit for infringement in the District of Kansas, against Yellow Freight, a customer of appellant Codex, the manufacturer of the accused devices. Codex is a Massachusetts corporation which could not be sued in Kansas under the patent venue statute, 28 U.S.C. § 1400(b). Codex shortly thereafter brought the instant declaratory judgment action in Massachusetts and sought an injunсtion against the Kansas suit. 1 Milgo countered with motions to dismiss, to stay, or to transfer to Kansas. The district- court, while finding that it could not be transferred because Kansas was not a district where the declaratory judgment action “might have been brought,” 28 U.S.C. § 1404(a), stayed the Massachusetts proceeding until the Kansas suit be ended. Sub silentio, it denied the injunction. Codex appeals. 2
*737
We deal first with the question of our jurisdiction. Ordinarily, no appeal can be taken from district court orders on transfers between districts pursuant to 28 U.S.C. § 1404(a),
In re Josephson,
1 Cir., 1954,
While we conclude that we have jurisdiction, this does not answer the question of the standard of review. Much of the reasoning counselling against liberal use of mandamus in choice of venue cases,
see In re Josephson,
ante, at 182-83, is equally applicable here. The decision on choice of venue is ordinarily a matter within the district court’s discretion, not to be overturned except on a very strong showing. Where the lower court’s decision is аrrived at by balancing numerous factors such as the convenience of parties and witnesses, availability of documents, possibilities of consolidation or coordination, and so forth, there will often be no single right answer. Appellate review, therеfore, is properly limited in the ordinary case because it serves little purpose, other than delay, to engage in a de novo consideration of such an inherently indeterminate decision. Indeed, just as in
Josephson
we indicated that we will ordinarily dispose of mandamus petitions in such cases by denying leave to file the petition for a writ, in cases where we have appellate jurisdiction summary disposition pursuant to local Rule 12 may often be appropriate. This does not mean, however, that discretion is non-reviewable.
Kerotest Mfg. Co. v. C-O-Two Co.,
Were this simply a dispute between Yellow Freight, Codex, and Milgo, the issue would be simple. Milgo is a Floridа corporation, and its technical experts and witnesses are to be found in Florida or elsewhere on the East Coast. Codex, a Massachusetts corporation, has its principal place of business here, with its witnesses and documents. Yellow Frеight, a Kansas corporation, is merely a customer of Codex; Milgo has made no showing that the dispute concerning the devices which Codex provided to Yellow Freight bears any substantial relation to Kansas. Accordingly, as between Massachusetts аnd Kansas, Massachusetts would clearly be the more convenient forum.
Milgo argues that the Kansas action, having been filed earlier, should be preferred.
Mattel, Inc. v. Louis Marx & Co.,
2 Cir., 1965,
Nor is Milgo correct in saying that “Codex was not deprived of any venue rights.” It offers two reasons. First, Codex “may control the Kansas Yellow Freight litigation without becoming a party in Kansas.” This ignores the fact that if Codex does that, and loses, the Kansas decisiоn will be binding on it as res judicata.
Schnell v. Peter Eckrich & Sons, Inc.,
1961,
Venue, rights, contrary, perhaps, to the view of the district court, which did not mention them at all, are important, particularly in patent litigation,
see Schnell v. Peter Eckrich & Sons, Inc.,
ante,
Milgo’s basic argument for litigating in Kansas rests on claims of judicial economy. We prefaсe this by repeating,
see
ante, that judicial economy assumes that the Kansas litigation is to be in substitution, rather than merely a precursor, for the Massachusetts action, and hence rejects Mil-
*739
go’s assertion that Codex’s venue rights are in no way involved. The first of thеse claims is that Kansas is the preferable forum because Milgo has already litigated the validity of its patents there in a suit against another party, United Utilities, Inc. While Milgo’s past success makes its affection for Kansas understandable, the substance of this argument overlooks the fact that that litigation being largely completed, there is no possibility of consolidation or coordination to promote judicial economy. Nor has there been any showing the Judge Templar, who had the
United
case, and whо is a senior judge, will accept a new, and what may well be a lengthy case.
7
However, if he will do so, although the presence of an “educated judge” has been considered significant by some courts,
Union Carbide Corp. v. Continental Oil Co.,
S.D.N.Y., 1971,
Finally, Milgo points to the fact that along with the Codex suit, it has brought another Kansas action, this one against American Telephоne & Telegraph Co., a New York corporation, Western Electric, its New York manufacturing subsidiary, Southwestern Bell, a Missouri subsidiary, and Boeing Computer, a Delaware corporation which purchased accused devices from Southwestern. On the samе day that the district court rendered its decision in the instant case, the Kansas court denied AT&T’s motion to transfer that action to New York. 8 Apparently, then, the AT&T action will go forward in Kansas, and Milgo urges this as an additional reason for affirming the decision below.
The pendency of related litigation in another forum is a proper factor to be considered in resolving choice of venue questions, see, e.
g., Firmani v. Clarke,
D.Del., 1971,
'To return to the beginning, this whole question is normally for the decision *740 and discretion of the district court, in which an appellate court should be slow to interfere. However, this is not a routine case, nor is it one where we find an abuse of discretion. Rather, it presents a situation, likely to recur, which we believe calls for the development of special principles not previously fully articulated. Since we see, in accordance with the principles hеrein set forth, room for only one decision, we see no point in remanding to the district court. While the result we reach here may not save judicial effort in this particular case, hopefully the views we have here set forth will, in the long run, diminish forum shopping and thе attendant wasteful pre-trial skirmishing which has been all to common in patent litigation.
Reversed.
Notes
. Yellow Freight joined as a plaintiff in Codex’s declaratory action, and has no objection to litigating in Massachusetts rather than Kansas.
. Our disposition herein renders moot thе related petitions for mandamus, In re Codex Corp. & Yellow Freight System, Inc., No. 76-1387 Orig. and No. 76-1438 Orig.
. We are aware of the observation in
Kerotest
that if the manufacturer does not wish to join in the customer suit, it may carry on a declaratory judgment suit elsewhere “simultaneously.”
.
See, e. g., Rayco Mfg. Co. v. Chicopee Mfg. Corp.,
S.D.N.Y., 1957,
. Milgo’s statement that the declaratory judgment action was brought “more than one month” later, (actually 35 days), if meant to negative promptness, is quite unwarranted.
. There may be situations, due to the prospects of recovery of damages or other reasons, in which the patentee has a special interest in proceeding against a customer himself, rather than solely as a shadow of the manufacturer, and therefore less weight should be given to the manufacturer’s forum. Nor do we mean to say that the balance of convenience might not indicate that the customer suit is in the more appropriate forum, but there is no present indication that this is such a case.
. See
Ziegler v. Dart Industries, Inc.,
D.Del., 1974,
. The New York court had previously ruled that it would defer consideration of AT&T’s motion for an injunction against the Kansas suit pending the Kansas court’s ruling on the transfer motion, so that at the time the district court acted, it could not have known whether there would be another action in Kansas, or not.
