As 2012 draws to a close, the
Middle District of Florida has released a late Christmas present in the form of
a new argument for litigants defending claims of design patent
infringement. On December 27, 2012,
Judge John Antoon II issued his decision on motion for partial summary judgment
of noninfringement in Pacific Coast
Marine Windshields Ltd. v. Malibu Boats, LLC, No. 6:12-cv-33, 2012 WL 6721060
(M.D. Fla. December 27, 2012). In his
decision, which appears to be a case of first impression, Judge Antoon applied
prosecution history estoppel to limit the claims of Pacific Coast's design
patent to its literal scope and concluded that Pacific Coast was estopped from
claiming that Malibu’s accused product infringed the patent-in-suit.
In this case, Pacific Coast
accused Malibu Boats of infringing U.S. Design Patent No. 555,070 for a “Marine
Windshield.” A figure from the ‘070
Patent appears below alongside an image of the accused Malibu product:
The ‘070 Patent and the Malibu
windshield are arguably similar except for the vents that appear on the corners
of the windshields. The ‘070 Patent has
four circular vents whereas the Malibu windshield has three rectangular
vents. Although some might argue that
this difference, alone, should be sufficient to distinguish the design under
the ordinary observer test, courts have noted that the ordinary observer test
subsumes a doctrine of equivalents analysis.
See, e.g. Lee v. Dayton–Hudson
Corp., 838 F.2d 1186, 1189–90 (Fed.Cir.1988); Minka Lighting, Inc. v. Craftmade Int'l, Inc., 93 Fed. Appx. 214,
217 (Fed. Cir. 2004). Therefore, Malibu
went one step further, arguing that Pacific Coast should be estopped from
claiming infringement under the doctrine of equivalents.
During prosecution of the ‘070
Patent, Pacific Coast had initially submitted twelve different versions of the
underlying windshield design. One of the
initial embodiments claimed a marine windshield with a hatch and two oval or
rectangular holes:
However, the PTO issued a
restriction requirement to select which one of the five groups of designs
Pacific Coast wished to prosecute. The
Examiner also noted that if Pacific Coast wished to contest the election
requirement, it would need to show that the design groups in question were not
distinct. In response, Pacific Coast
amended the application to delete the figures for the the non-elected designs
and proceeded on the merits with respect to the figures that resulted in the
‘070 Patent. Notably, Pacific Coast
never prosecuted divisional applications based on the other embodiments,
allowing them to be abandoned.
Before the district court, Malibu
argued that Pacific Coast’s election gave rise to prosecution history estoppel
with regard to any windshields with less than four vent holes. Malibu argued that under Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co., Pacific Coast’s
amendment and election constituted a narrowing amendment made for the purpose
of patentability and that Pacific Coast had thereby relinquished any equivalent
designs that incorporated fewer than four vent holes. See 535
U.S. 722, 737 (2002) (“A patentee who narrows a claim as a condition for
obtaining a patent disavows his claim to the broader subject matter.”).
Judge Antoon agreed with Malibu
that Pacific Coast’s limiting amendment estopped their infringement contentions
against Malibu. Pacific Coast attempted
to argue that the restriction requirement was merely administrative, and thus
did not give rise to prosecution history estoppel, citing cases regarding
restriction requirements in utility cases.
However, the Court found that restriction requirements in design cases
were distinguishable because, although restriction requirements are discretionary
in utility cases, they are mandatory in design cases where applications may not
contain more than one inventive concept.
(citing MPEP §§ 1504.05,
1502.01(D)).
Finally, the Court concluded that
Pacific Coast had failed to overcome the presumption in favor of a disclaimer
of equivalents. Pacific Coast attempted
to argue that its limiting amendment had deleted figures with two vent holes,
not three, as found in the accused product and that windshields with three vent
holes was not within the scope relinquished by Pacific Coast’s amendment. The Court dismissed this argument without
clearly addressing it, stating only that “the accused design is still clearly
within ‘the territory between the original claim and the amended claim.’” 2012 WL 6721060, at * 4 (quoting Festo, 535 U.S. at 740).