Patent Law Blog (Patently-O)

Rethinking the Scope of Prior Art in Obviousness Cases

In Cohesive Technologies, the Federal Circuit issued a reminder that the novelty analysis of 35 U.S.C. §102 is separate and distinct from the nonobviousness analysis of 35 U.S.C. §103(a). The court notes that some prior art evidence – such as inherent elements of a disclosure – used for anticipation argument may not be used in obviousness analyses. That result is in tension with the traditional understanding that § 102 material may be used for §103(a) analysis.

In a recent e-mail, Professor Isaacs (NKU) saw that tension as a reason to for courts to take a fresh look at the text of §103(a). This is especially timely in light of the recent cases such as eBay, KSR, and MedImmune where the Supreme Court had no trouble altering longstanding precedent.

The most glaring problem with the current interpretation of § 103(a) involves post-invention art and secret prior art that are available as §102(b)/§103(a) and §102(e)/ §103(a) references respectively. These two allowances are contrary to the plain language of §103(a) because the statute focuses on what "would have been obvious at the time the invention was made."

35 U.S.C. 103(a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in §102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. …

Under a plain reading of §103(a), post-invention references cannot negate patentability because they were not available "at the time the invention was made." Similarly, secret prior art – almost by definition – could not be known by one of ordinary skill in the art – especially under the Supreme Court's new "common sense" approach to obviousness.

Of course, these arguments have been tried before – and failed.

• In re Foster, 343 F.2d 980 (C.C.P.A. 1965) (cert denied) (creating §102(b)/§103(a) prior art)
• Hazeltine Research, Inc. v. Brenner, 382 U.S. 252 (1965) (creating §102(e)/ §103(a) prior art)

Perhaps the time is right for a challenge.

Priority to Foreign Application Requires "Inventor's Knowledge or Consent" at the Time the Foreign Application was Filed

Boston Scientific SciMed v. Medtronic Vascular (Fed. Cir. 2007).

SciMed’s patent application was originally filed by a European company (MinTec) in February 1994 as an European Patent Application. At that time, however, the inventors (Cragg & Dake) had not yet assigned rights to MinTec. Cragg assigned his rights a few months later. Dake did not assign his rights until 1996.

Medtronic has a US priority filing date of June 1994 on the same invention. In the interference, the question is whether a US patent applicant claim priority to a foreign application filed by an entity that was not acting on behalf of the US applicant at the time of filing? CAFC Answer: No priority unless foreign application was filed on behalf of the US applicant.

Under the court’s ruling here, 35 USC 119(a) provides a personal right to the inventor. Consequently, there must be a “nexus…between the inventor and the foreign applicant at the time the foreign application was filed.” That nexus requires at least “knowledge or consent” of the inventor.

“Indeed, as a matter of pure logic, an entity could not have filed a foreign application “on behalf of” an inventor without the inventor’s knowledge or consent; that the foreign application may have been filed in accordance with the laws of the country in which it was filed has no bearing here.”

Holding:

“[A] foreign application may only form the basis for priority under section 119(a) if that application was filed by either the U.S. applicant himself, or by someone acting on his behalf at the time the foreign application was filed.” (emphasis in original)

Notes:

• This decision [LINK]: Scimed Life Sys., Inc. v. Medtronic Vascular, Inc., — F.3d — (Fed. Cir. 2007).
• Final BPAI Decision: Patent Interference No. 104,192, Paper No. 187, 2001 WL 1339890 (B.P.A.I. July 21, 2001).
• Trial Court Decision: Scimed Life Sys., Inc. v. Medtronic Vascular, Inc., 486 F. Supp. 2d 60 (D.D.C. 2006).