Antеe, Inc. (“Antee”) appeals from a final judgment of the United States District Court for the Eastern District of Pennsylvania. A jury found that Antee had willfully infringed claims 1, 2, 7, 12, and 13 of U.S. Patent No. 5,955,955 (“the '955 patent”), owned by Comaper Corp. (“Coma-per”), and that independent claims 1 and 12 of the patent were not invalid as obvious. However, the jury also found that dependent claims 2, 7, and 13 were obvious.
We uphold the district court’s claim constructions and reject Antec’s contention that a new trial is required because the district court’s clаim constructions were in error. However, we conclude that the district court was required to grant a new trial because the jury’s verdicts on obviousness were irreconcilably inconsistent. We therefore affirm in part, vacate in part, and remand for a new trial on invalidity. We also dismiss the cross-appeal.
BACKGROUND
The '955 patent claims a cooling device designed to mount within the drive bay of a computer. The device comprises a “case” containing an air movement device, such as a fan. Openings in the case allow for movement of air between the cool ambient air outside the computer and the warm air inside the computer. In particular, the device is meant to cool the drive bay region of the computer, where hard disk drives, optical drives, or tape drives may be installed. Claim 1 of the '955 patent is representative:
1. A cooling device for a computer, said computer having a drive bay region with at least one drive bay slot adapted to receive, said device comrising [sic]:
a case configured to mount within said drive bay slot of said computer such that said case occupies substantially the entire drive bay slot, said case having at least a first opening and at least a second opening, when mounted within said drive bay, said first opening being exposed to ambient air and said second opening being within said drive bay region of said computer;
at least one air movement device mounted within said case, said air movement device being configured in one of two ways, a first way in which said air movement device draws cooling air through said first opening and ex *1346 hausts substantially all of said cooling air from said case though said second opening into said drive bay region, a second way in which said air movement device draws air into said case through said second opening from and drive bay region and exhausts it through said first opening; and
power supply means for supplying power to said air movement device.
'955 patent col.5 11.35-57.
On March 8, 2005, Comaper, owner of the '955 patent, brought suit аgainst Antee for infringement in the United States District Court for the Eastern District of Pennsylvania. 1 Antee is a manufacturer of computer components and accessories. Its accused products are the [¶] Cooler, the Hard Disk Drive Cooler, and the Hard Disk Cooling System.
On September 19, 2006, the district court construed various disputed terms of the '955 patent.
Comaper Corp. v. Antec, Inc.,
No. 05-CV-1103,
On October 10, 2007, following a five-day trial, the jury returned a “Special Verdict.” It found that Antee had infringed claims 1, 2, 7,12, and 13 of the '955 patent, and that the infringement was willful. It also found that Antec’s proffered prior art devices were in public use, offered for sale, or described in publications more than one year prior to the application for the '955 patent. The jury found that the asserted claims of the '955 pаtent were not anticipated and that independent claims 1 and 12 were not obvious. However, the jury found that claims 2 and 7, which depend from claim 1, and claim 13, which depends from claim 12, were invalid as obvious.
Comaper Corp. v. Antec, Inc.,
No. 05-CV-1103,
On post-trial motions, Antee argued that it was entitled to judgment in its favor on the issues of infringement and invalidity. However, the district court found that An-tee had not made a motion for JMOL at the close of evidence pursuant to Fed. R.Civ.P. 50(a), and therefore it had waived the right to make such a motion post-trial under Rule 50(b). Id. at *4-5. The district court also denied Antec’s motion for a new trial. The court agreed that the verdicts on obviousness were inconsistent but reconciled the verdicts by concluding that Antee had failed to present sufficient evidence for the jury to find that claims 2, 7, and 13 of the '955 patent were obvious. Id. at *12-13. Following entry of judgment in favor of Comaper, the district court also granted Comaper’s request for attorney fees based on the finding of willful infringement, but denied its request for enhanced damages.
Antee timely appeаled, and Comaper cross-appeals on the issue of enhanced *1347 damages. We have jurisdiction over this appeal pursuant to 28 U.S.C. § 1295(a)(1).
DISCUSSION
I Summary Judgment
Antee first contends that the district court erred in denying Antec’s motions for summary judgment of non-infringement and invalidity due to obviousness. The district court denied Antec’s motions because it determined that genuine issues of material fact existed.
See Summary Judgment Order,
II Judgment as a Matter of Law
Antee also argues that the district court erred when it denied Antec’s motion for JMOL after the jury returned its verdict. The district court concluded that Antee had waived its right to move for JMOL after trial because it had failed to preserve that right by moving for JMOL at the close of evidence.
JMOL Order,
Under Fed.R.Civ.P. 50(b), a party must have first moved for JMOL under Rule 50(a) at the close of all the evidence in order to preserve the right to renew that same JMOL motion aftеr the jury returns its verdict.
See Chem. Leaman Tank Lines, Inc. v. Aetna Cas. & Sur. Co.,
Ill New Trial
A Claim Construction
Antee argues in the alternative that it is entitled to a new trial. It claims first that *1348 the district court erred in construing terms of the '955 patent and in instructing the jury as to the meaning of those claim terms.
1 “Case”
With regard to the term “case” in the '955 patent, the district court construed it to mean “a structure for containing and holding something.”
2
Claim Construction Order,
2 “Drive Bay Slot”
The district court construed the term “drive bay slot” to mean “the relatively narrow opening in the housing of the computer that leads to the drive bay.”
Claim Construction Order,
The meaning of the term “drive bay slot” was made clear during prosecution. During the prosecution of the '955 patent, the application was repeatedly rejected as anticipated by and obvious in light of U.S. Patent No. 5,171,183 (“Pollard”). Pollard disclosed a case module for installing a 3.5-inch form-factor removable-media disk drive into a 5.25-inch drive bay. The module included a cooling unit that would draw in ambient air to cool the drive. Once installed, both the front of the disk drive and the vent for the cooling unit could be seen on the front of the module, *1349 such that the drive and vent would together occupy the opening in the computer housing leading to the drive bay in which the module was installed. In order to distinguish the application of the '955 patent from Pollard, the inventors and the examiner agreed that a limitation would be added to the claims wherein the “case occupies substantially the entire drive bay slot” — i.e., unlike Pollard, the cooling unit itself would occupy substantially the entire drive bay slot. 3 Because the phrase “case occupies substantially the entire drive bаy slot” was added to distinguish Pollard, the use of the term “slot” in Pollard is significant. Pollard clearly describes a “slot” as the two-dimensional opening in the computer housing: “A common PC enclosure has 5.25 inch form factor slots (5.75 inches wide by 3.25 inches high) in the face of the enclosure .... ” Pollard col.l 11.18-20 (emphasis added). Therefore, it is appropriate for the term “drive bay slot” in the '955 patent to have a similar meaning, and we conclude that the district court correctly construed “drive bay slot” to mean “the relatively narrow opening in the housing of the computer that leads to the drive bay.”
3 “Second Opening”
Finally, Antee challenges the district court’s construction of the term “second opening.” The court determined that the term meant “a separate opening that is exposed to the drive bay region.”
Claim Construction Order,
Thus, the district court’s construction faithfully tracks the ordinary and customary meaning of the term in light of the intrinsic evidence. We discern no error in the district court’s construction of “second opening.”
Because the district court did not err in its construction of the terms of the '955 patent, Antee is not entitled to a new trial on that basis. Furthermore, in light of this claim construction, we cannot say that Antee is entitled to a new trial on the ground that the jury’s finding of infringement was against the weight of the evidence.
B Inconsistent Verdicts
Antee also argues that a new trial is required because of the inсonsistent jury verdicts on obviousness. The jury found that independent claims 1 and 12 of the '955 patent were not obvious. However, it also found that claims 2 and 7, which depend from claim 1, and claim 13, which depends from claim 12, were invalid as
*1350
obvious. These verdicts are plainly inconsistent, as both the district court and Comaper recognize.
JMOL Order,
Comaper responds that Antee waived its right to challenge the inconsistent verdicts under Fed.R.Civ.P. 49(b) because it did not raise an objection before the jury was dismissed. The jury in this case returned a special verdict under Rule 49(a), however, not a general verdict with interrogatories. The verdict form was specifically labeled “Special Verdict Form.” As Comaper itself recognizes, under Third Circuit law, whеn a jury returns a special verdict, no contemporaneous objection prior to the dismissal of the jury is required in order to preserve the right on appeal to challenge the verdicts as inconsistent.
See Malley-Duff &
Assocs.,
Inc. v. Crown Life Ins. Co.,
Third Circuit law recognizes that where verdicts are genuinely inconsistent and the evidence might support either of the inconsistent verdicts, the appropriate remedy is ordinarily to order an entirely new trial.
See Malley-Duff,
Here, the district court concluded that the evidence would not support a verdict of obviousness as to claims 2, 7, and 13 of the '955 patent, and resolved the inconsistency in the jury verdicts by granting Comaper’s renewed motion for JMOL.
See JMOL Order,
The district court erred in concluding that the prior art asserted by An
*1351
tec was not analogous prior art; indeed, Comaper itself did not make this argument. “Analogous art is that which is relevant to a consideration of obviousness under [35 U.S.C. § 103].”
Wang Labs., Inc. v. Toshiba Corp.,
Antec’s asserted prior art references all relate to the same field of еndeavor as the '955 patent. Each piece of prior art involves cooling computer electronics using fans to draw cool ambient air. The IBM AS/400 Model 9404 is a computer system with a drive bay-mounted drive module containing a fan that draws outside air into the computer. The Control Data Corp. 910 workstation similarly involves a drive bay-mounted drive module containing a fan. The IBM RISC System/6000 is a computer system with dedicated cooling fans drawing outside air into the computer. The Fujitsu M2311K is a large hard disk drive module with a fan unit frоm the early 1980s that could be installed into a computer system cabinet. U.S. Patent No. 3,971,877 discloses air filters used in combination with computer fans, which are relevant to the elements added in dependent claims 2 and 13 of the '955 patent. U.S. Patent No. 4,126,269 discloses a fan-ventilated electronics enclosure. U.S. Patent No. 4,744,005 discloses a removable module for cooling an early microcomputer with fans. And finally, U.S. Patent No. 5,210,680 discloses a printed circuit board chassis with a modular cooling device. Because these prior art references are in the same field of endeavor as the '955 patent, they are analogous prior art, and it was thus proper for the jury to consider them on the issue of whether the '955 patent would have been obvious.
The district court also erred in concluding that Antee had “fail[ed to] establish that there is sufficient similarity between the proffered prior art and the claims of the '955 patent, taken as a whole.”
5
JMOL Order,
Determining obviousness requires considering whether two or more
*1352
pieces of prior art could be combined, or a single piece of prior art could be modified, to produce the claimed invention. This analysis typically invokes the familiar teaching-suggestion-motivation (“TSM”) test, asking whether a person having ordinary skill in the art would have found some teaching, suggestion, or motivation to combine or modify the prior art references.
Pfizer, Inc. v. Apotex, Inc.,
[w]hen there is a design need or market pressurе to solve a problem and there are a finite number of identified, predictable solutions, a person of ordinary skill has good reason to pursue the known options within his or her technical grasp. If this leads to the anticipated success, it is likely the product not of innovation but of ordinary skill and common sense. In that instance the fact that a combination was obvious to try might show that it was obvious under [35 U.S.C.] § 103.
Id.
at 421,
With the correct test in mind, there is no question that there is ample evidence in the record supporting the jury’s verdicts that claims 2, 7, and 13 of the '955 patent would have been obvious. The district court recognized that Antee had provided extensive claim-by-claim and element-by-element comparisons between numerous prior art references and the claims of the '955 patent.
JMOL Order,
The IBM AS/400 Model 9404 (“AS/400”) is a prior art computer system, circa 1990, with a drive bay region containing multiple drive bays. 6 A pluggable disk drive module including a fan may be installed within each drive bay. The district court did not address the AS/400 in its order granting JMOL and did not explain why the AS/400 did not render the devices of claims 2, 7, and 13 of the '955 patent obvious. The picture below shows the AS/ 400 with its front cover removed to expose the drive bays. Three drive bays are occupied and one is empty.
*1353 [[Image here]]
IBM AS/400 System with Drive Bays Exposed
The disk drive modules each contain a hard disk drive, a fan, and additional cireuitry to allow the module to interface with the computer system for data and power. The two images below show the front and back sides of the disk drive module.
[[Image here]]
*1354 [[Image here]]
IBM AS/400 Drive Module: Back Side
The jury was shown a complete AS/400 system, including а drive module, at trial. See J.A. 501. 7 Antec’s expert identified a “direct analog” to the “drive bay slot” element of the '955 patent on the AS/400 system. J.A. 506. Antec’s expert also testified that the AS/400 drive module contains a “case” that “substantially fill[s] ... [the] drive bay slot[ ],” an “air movement device” in the fan, a “first opening” on the front side, a “second opening” on the back side, and a “power supply means” at the power connector on the back side. J.A. 502. He furthermore testified that when the drive module is installed in the AS/400, “the fan on the back is configured ... to draw air from the outside through the module out to the back.” J.A. 501. In other words, he testified that the AS/400 is configured in the “first way” as described in the '955 patent, in which cool air is drawn in from the outside. See '955 patent col.5 11.47-51. Moreover, “there is a channel in the back ... and [the module] pushes the air, it pulls the air through ... the module and out to the back ... where there is a channel that is shared by all of the drive bays.” J.A. 501-02. Thus, “substantially all of said cooling air [is exhausted] from said case through said second opening into said drive bay region.” See '955 рatent col.5 11.49-51. In this way, the AS/400 drive module cools the computer system, particularly the drive bay region.
The jury could have credited the testimony of Antec’s expert and relied on its own assessment of the AS/400 exhibits shown at trial to conclude that claims 2, 7, and 13 of the '955 patent would have been obvious to a person having ordinary skill in the art in light of the AS/400 drive module even if, as Comaper argues, every element in claim 1 of the '955 patent was not present in the AS/400 device.
In summary, the jury found that independent claims 1 and 12 were not obvious, while dependent claims 2, 7, and 13 were obvious. Under the circumstances of this *1355 case, Antee is correct that the jury’s verdicts on obviousness reflect an irreconcilable inconsistency. Accordingly, we vacate the judgment of the district court and remand for a new trial on invalidity. 8
CONCLUSION
For the aforementioned reasons, we affirm in part, vacate in part, and remand for a new trial on invalidity. Comaper’s cross-appeal is dismissed.
AFFIRMED IN PART, VACATED IN PART, and REMANDED;
CROSS-APPEAL DISMISSED
COSTS
No costs.
Notes
. Comaper also sued Best Buy Co., Inc. and Micro Electroniсs, Inc. Neither is a party to this appeal.
. Both parties on appeal misstate the district court's construction of "case,” utilizing the disjunctive "or” in the construction instead of the conjunctive "and.” The court's claim construction order and its instructions to the jury both stated that "case” meant "a structure for containing
and
holding something.”
See Claim Construction Order,
. The examiner’s stated reason for allowing the '955 patent was that “the case for the cooling device mounted in the drive slot does not provide housing a disk drive which is different from the Pollard et al reference wherein the case houses both the cooling device and the disk drive.” J.A. 212.
. Comaper asserts that “if [Antee] wanted to challenge the inconsistent verdict, [it] should have challenged the JMOL that resolved it.” Oral Arg. at 23:52-23:56. This court, howev
*1351
er, reviews judgments.
Fromson v. Advance Offset Plate, Inc.,
. The court supported its conclusion with a summary analysis of only three of the eight pieces of prior art listed above. With regard to the Fujitsu M2311K, for example, the court stated only:
Finally, Antee sought to establish obviousness by presenting evidence that the Fujitsu Device contains all element [sic] of the '955 patent except the "second opening." Again such a showing does not establish the factual requirements for a conclusion of obviousness.
JMOL Order,
. The district court instructed the jury that "drive bay” means "the system space reserved for installation of any type of drive,” Transcript at 85-86,
Comaper Corp. v. Antec, Inc.,
No. 05-CV-1103,
. The pictures of these computers were apparently not the exhibits in evidence, but appear in the Joint Appendix. The parties do not appear to dispute that the pictures accurately represent the physical devices that were before the jury.
. Antee also challenges the award of attorney fees and Comaper appeals from the denial of enhanced damages. Antee points out that there cannot be enhanced damages or attorney fees based on a theory of willful infringement unless its actions were objectively unreasonable.
See In re Seagate Tech., LLC,
