Appeal 2008-3921
Application 10/732,429
Technology Center 1600
Decided: March 5, 2009
The claims at issue were
1. A method of treating tissue or organ transplant rejection in a recipient comprising the step of orally administering to the recipient an effective amount of a lactoferrin composition to attenuate the tissue or organ transplant rejection.34. A method of modulating the immune response against an organ or tissue transplant in a recipient comprising the step of orally administering to the recipient an effective amount of a lactoferrin composition to modulate the response against the organ or tissue transplant.
Claim 1 was rejected as being inherently anticipated by a single reference; claims 1 and 34 were rejected as allegedly obvious. A prior art reference taught the administration of lactoferrin in organ transplant patients and immunocompromised patients. However, the reference only taught that it could be used to prevent infections not to attenuate rejection or modulate the response against the organ transplant. The case nicely summarizes inherent anticipation
"To anticipate a claim, a prior art reference must disclose every limitation of the claimed invention, either explicitly or inherently." In re Schreiber, 128 F.3d 1473, 1477 (Fed. Cir. 1997). Thus, "[n]ewly discovered results of known processes directed to the same purpose are not patentable because such results are inherent." Bristol-Myers Squibb Co. v. Ben Venue Labs., Inc., 246 F.3d 1368, 1376 (Fed. Cir. 2001). "Inherency, however, may not be established by probabilities or possibilities. The mere fact that a certain thing may result from a given set of circumstances is not sufficient." In re Robertson, 169 F.3d 743, 745 (Fed. Cir. 1999) (citations and internal quotation marks omitted). Therefore, the Examiner cannot establish inherency merely by demonstrating that the asserted limitation is probable or possible. In re Oelrich, 666 F.2d 578, 581 (CCPA 1981). However, "'[i]n general, a limitation or the entire invention is inherent and in the public domain if it is the 'natural result flowing from' the explicit disclosure of the prior art.'" Perricone v. Medicis Pharm. Corp., 432 F.3d 1368, 1377 (Fed. Cir. 2005) (quoting Schering Corp. v. Geneva Pharms., Inc., 339 F.3d 1373, 1379 (Fed. Cir. 2003). Therefore, "when considering a prior art method, the anticipation doctrine examines the natural and inherent results in that method without regard to the full recognition of those benefits or characteristics within the art field at the time of the prior art disclosure." Perricone, 432 F.3d at 1378.
The Examiner appeared to be arguing that since the compound was used in organ transplant cases it was necessarily and always being used to prevent rejection. The Board noted that some transplant patients will not have rejection and only infection and therefore the result will not always necessarily result from the prior art. "No evidence has been put forward by the Examiner that all, or even substantially all, transplant patients with infection are also experiencing rejection" Therefore, no anticipation.
With regards to obviousness the Examiner found a reference that discussed the oral administration of lactoferrin. However, the applicant submitted a post-filing reference that stated "[i]t has been reported in the literature that oral lactoferrin is not absorbed systemically through the mature gut to any significant degree." The Board when stating the law regarding obviousness stated, "An obviousness analysis requires that the prior art both suggest the claimed subject matter and reveal a reasonable expectation of success to one reasonably skilled in the art. In re Vaeck, 947 F.2d 488, 493 (Fed. Cir. 1991)." Here, the BPAI found no reasonable expectation of success because of the post-filing reference. The Board concluded: "Thus, while [the primary reference] teaches that oral administration may be contemplated, the prior art at the time Appellants' claimed invention was made establishes that a person of ordinary skill in the art would have no expectation of successfully using orally administered lactoferrin in [the primary reference's] method." Therefore, "A person of ordinary skill in the art would not have a reasonable expectation of successfully practicing the claimed invention in view of the combination of" the cited references.
Case can be found here
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