K2 Wins Partial Summary Judgment in Wide Short Ski Case

Inventor Paul Nelson sued K2 for infringement of his US Patent No. 5,603,522 covering a "Wide Short Ski." The specification was drawn to a shaped ski having a range of dimensions in length, side-cut radius, shovel width, and tail width. The claims at issue (added in a CIP) were for much narrower ranges than what was disclosed in the parent application's specification. K2 moved for partial summary judgment, arguing that these claims (the ones added in a CIP) were not supported by the parent application, an argument setting up a motion for summary judgment of invalidity under 35 USC Section 102, because the claims at issue were not entitled to priority filing for failure to satisfy the written description requirement.

From Judge Lasnik's order:

The narrowing of the length and width ranges is significant: more than half of the combinations described in the parent application are excluded from the claimed invention. It is not clear how one skilled in the art of ski design could identify the measurements that were of special interest to the inventor. The 1992 application does not disclose the precise ranges later claimed, nor does it contain descriptive terms that would lead to the claimed ranges.

In a footnote, the Order states that the written description bar has potentially been raised "to a height that may be insurmountable for many inventors." In support of this gloomy outlook for the future, Judge Lasnik cites Judge Learned Hand's decision in Eng'g Dev. Labs v. Radio Corp. of Am., 153 F.2d 523, 526-27 (2nd Cir. 1946), where the distinguished jurist said that meeting the written description requirement was "an impossible task" encouraging "that surfeit of verbiage [in patent claims] which has for long been the curse of patent practice and has done much to discredit it."

Let's see what happens next. Perhaps an appeal? Settlement? My personal view is that the viability of this decision on appeal depends greatly on the make up of the reviewing panel at the CAFC. Decisions on the written description requirement from the CAFC have been rightly criticized as "opaque to the point of obscuring other areas of . . . [patent] law."


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