Nassau Precision Casting Co. v. Acushnet Co.
940 F. Supp. 2d 76
E.D.N.Y2013Background
- Plaintiff Nassap Precision Casting owns US Patent No. 5,486,000 and alleges Defendants' Cobra and Acushnet clubs infringe Claims 1 and 2.
- Claims 1 and 2 describe a method of improving weight distribution by removing material from the top surface and relocating it to bottom areas without increasing total weight.
- Accused clubs (Cobra S9, S9 II, King Cobra UFi, Cobra S2) allegedly practice the claimed method through redistribution of weight from the top to the toe/heel while keeping overall head weight constant.
- Defendants move for summary judgment on non-infringement and invalidity, arguing the claims describe a manufacturing process and lack an objective standard for the 'no adverse consequence' limitation.
- Court conducts claim construction, concludes Claims 1–2 describe a design method (not manufacturing), and determines Accused Clubs do not meet the claimed limitations, granting summary judgment for Defendants.
- Court discusses POSITA definitions, intrinsic and extrinsic evidence, and construes the disputed terms to emphasize weight distribution design rather than manufacturing steps.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether Claims 1 and 2 claim a design method or a manufacturing process | Nassap contends claims claim a process of removing/relocating material. | Defendants argue claims disclose a manufacturing process. | Claims construed as design method |
| Does the Accused Club meet the 'location not used during ball-striking service' limitation of Claim 1 | Accused clubs use a non-face location for modification, aligning with the limitation. | Center topline is not used during ball-striking service; thus meets limitation. | Accused clubs do not meet the limitation |
| Does the Accused Club meet the 'determined weight' limitation of Claim 2 | Weight removed is redistributed as required by Claim 2. | Polymer inserts keep some weight at topline, preventing full redistribution of the determined weight. | Accused clubs do not meet the 'determined weight' limitation |
| Validity: was the patent anticipated by prior art | Anticipation by Hogan Magnum or Antonious; no adverse-consequence indefiniteness. | Prior art anticipates the invention; 'no adverse consequence' is indefinite. | Court did not reach anticipation/indefiniteness; granted summary judgment on non-infringement |
Key Cases Cited
- Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005) (claim construction must consider the specification)
- Vitronics Corp. v. Conceptronic, Inc., 90 F.3d 1576 (Fed. Cir. 1996) (intrinsic evidence is primary in claim construction)
- CAE Screenplates Inc. v. Heinrich Fiedler GmbH & Co. KG, 224 F.3d 1308 (Fed. Cir. 2000) (presumption of different meanings for different claim terms)
- Star Scientific, Inc. v. R.J. Reynolds Tobacco Co., 655 F.3d 1364 (Fed. Cir. 2011) (infringement proof requires each claim element or its equivalent)
- Kahn v. General Motors Corp., 135 F.3d 1472 (Fed. Cir. 1998) (preponderance standard for infringement proof)