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August 31, 2005.


The opinion of the court was delivered by: DENISE COTE, District Judge


On July 7, 2005, Mylan moved for reconsideration, pursuant to Local Civil Rule 6.3, of this Court's June 21, 2005 Memorandum Opinion and Order ("June 21 Order") precluding Mylan from offering at trial any evidence as to the invalidity of U.S. Patent No. 4,687,777 (the "`777 Patent") except that based on a theory of obviousness as set forth in its September 8, 2003 Notice of Paragraph IV certification to Takeda. Mylan has abandoned the theory of obviousness identified in its Pargraph IV certification and after the close of fact discovery has sought to substitute a new theory. For the reasons stated herein, Mylan's motion for reconsideration is denied.


  On September 8, 2003, Mylan sent Takeda a Notice of Paragraph IV Certification, in which it informed Takeda that it had submitted an Abbreviated New Drug Application ("ANDA") regarding the sale of pioglitazone before the expiration of certain patents ("September 8 Notice"). That notice described Mylan's belief that the `777 patent was invalid on the basis of obviousness due to Compound 16 of U.S. Patent No. 4,287,200 (the "`200 Patent"), which Mylan asserted is identical to a Compound 14 identified in a prior publication authored by Dr. Sohda (the "Sohda article").*fn1

  In January of this year, in response to a 30(b)(6) notice from Takeda, Mylan identified three persons as knowledgeable with respect to its claim that the `777 patent is invalid on the basis of obviousness: Dr. John O'Donnell, Mylan's chief scientific officer; Wayne Talton, Mylan's head of regulatory affairs; and Shelly Monteleone, a patent attorney who works at Mylan. Dr. O'Donnell remains unable to testify due to medical reasons, and although both Talton and Monteleone were deposed, neither one furnished relevant testimony regarding the factual and/or scientific bases for Mylan's Paragraph IV certification.

  As a result, on March 17, 2005, Takeda served contention interrogatories on Mylan, in which it requested that Mylan identify "every claim of the Takeda Patents" that Mylan contends is not valid or is unenforceable and that Mylan provide "[a] complete explanation of [its] basis for its contention that each such claim is not valid or is unenforceable." Takeda also served a second 30(b)(6) notice on Mylan on April 13, 2005 that explicitly requested that Mylan produce a witness to testify to "[e]ach and every basis upon which [Mylan] contend[s] or will contend that [the `777 Patent] is invalid, unenforceable, or will not be infringed (whether or not such basis is contained in the Paragraph IV Certification)" as well as to "[e]ach and every fact supporting or undermining" these bases. These two issues constituted Topics 6 and 7 of Takeda's 30(b)(6) notice.

  On April 25, Mylan responded to Takeda's contention interrogatories and did not mention any basis for a claim of obviousness with respect to the `777 Patent. Instead, it stated for the first time that the `777 Patent is unenforceable due to Takeda's lack of good faith and candor in applying to the Patent and Trademark Office for that patent.*fn2 Several days later, on April 29, 2005, Mylan completed its objections to the April 13 30(b)(6) Notice. In these objections, Mylan refused to respond to Topics 6 and 7 on the grounds that the information sought was protected by the attorney-client privilege and work-product immunity and that Takeda instead should seek to discover the bases for Mylan's claims of invalidity or unenforceability of the `777 Patent through contention interrogatories. Subsequently, Takeda and Mylan engaged in unsuccessful negotiations as to the timing of the 30(b)(6) deposition. Given the parties' inability to agree upon an appropriate time for this deposition, as well as the parties' continuing debate about the scope of that deposition and Dr. O'Donnell's ability to testify, a May 25 telephone conference, which was held on the record, addressed these issues, inter alia. During that conference, it was noted that Mylan had not complied with the Court's prior instructions regarding the scheduling of depositions. The Court further recounted that per the parties' consent, Mylan was required to produce a 30(b)(6) witness and that that witness was required to "have, as part of the preparation for that deposition, a meeting with Dr. O'Donnell to obtain all relevant information necessary to respond fully and completely to the 30(b)(6) deposition" notice. (Emphasis added.)*fn3

  On June 2 and 3, Takeda deposed Brian Roman ("Roman"), Mylan's designated 30(b)(6) witness. Despite the Court's May 25 Order, Roman did not testify to Topics 6 and 7 during his deposition. Although Roman was asked whether the paragraph IV certification "contain[s] all of the reasons why Mylan contends that the claims of the `777 Patent are invalid or unenforceable of which it was aware on or before September 8, [2003]," counsel for Mylan instructed him not to answer the question. Roman did respond, however, to questions regarding various compounds identified in the Sohda article. When asked whether several compounds, including Compound 57, in the Sohda article would be deemed to be a compound of interest to "one of ordinary skill in the art," Roman explained that "if one were looking for a compound that had an acceptable toxicity profile as well as the types of activity that one's looking for here," the body weight and fat weight increases associated with compounds 57 and 58 "should cause one to rule that out."

  On June 6, 2005, three days after Roman's deposition, Mylan served supplemental responses to Takeda's contention interrogatories. In these supplemental responses, Mylan asserted for the first time that the `777 Patent is invalid as obvious on the basis of Compound 57 of the Sohda article, which is equivalent to Compound 40 of the `200 Patent and to which Mylan assigns the shorthand "2-pyridal derivative".*fn4 According to Mylan's supplemental response, "[p]ioglitazone is an obvious modification of the 2-pyridal derivative, which the prior art teaches possesses hypolipidemic and hypoglycemic activities with low toxicity. Pioglitazone is not unexpectedly different in activity or toxicity from the 2-pyridal derivative."*fn5

  By way of a June 14, 2005 letter, in which it described much of the above history, Takeda argued that Mylan had been "playing a shell game" with respect to its attack on the `777 Patent and requested that this Court enter an Order precluding Mylan from introducing at trial any evidence as to invalidity of the `777 Patent except based on obviousness "as expressly set forth in the Detailed Legal and Factual Basis for Certification which Mylan sent to Takeda on September 8, 2003." A conference in this action was held on that day, during which the parties principally discussed the evidentiary bases for Mylan's motion for leave to amend its answer to assert a claim of inequitable conduct and whether prejudice would result from the granting of the motion. Noting that Mylan had identified two late-disclosed documents, as well as related deposition testimony, that might support an inequitable conduct claim, that motion was granted through a June 15, 2005 Order.

  Toward the end of the June 14 conference, however, the Court asked Mylan's counsel to address Takeda's June 14 letter. Counsel stated that he understood "the nature of our allegation on obviousness [to be a] purely legal argument, possibly supplemented with some expert scientific testimony." Counsel further argued that 35 U.S.C. § 282 "provides for a deadline some point prior to the trial at which a defendant must identify all prior art to be cited against the patent. Up until that time, not only can you add new arguments and new theories, you can add new references to be asserted against the patent." Takeda's counsel disagreed, contending that the law does not allow an ANDA applicant to change its theory. Given this disagreement, the June 15 Order provided that Mylan's reply to Takeda's June 14 letter was due on June 16, and that Takeda's reply was due on June 17.

  In its June 16 letter, Mylan contested Takeda's request for an order of preclusion on several grounds. First, Mylan asserted that where an ANDA applicant attacks a patent claim on the basis of obviousness under 35 U.S.C. § 103, "[e]xpert opinion is relied upon to establish whether a person of ordinary skill in the art to which the patent pertains would have found the invention to be obvious in view of the prior art." Mylan further stated that in pursuing its claim that the `777 claim was invalid, it would "not rely on information or testimony from Mylan or any of its employees" but would instead provide "the detailed bases for Mylan's invalidity arguments" in its expert reports. As a result, it argued, Takeda could not claim to be prejudiced by its June 6 responses.

  With respect to whether or not Roman was obligated to testify as to Topics 6 and 7 of Takeda's 30(b)(6) notice, Mylan noted that it had objected to these topics and that Takeda had not addressed them in a letter to the Court. It further noted that Roman could not have provided testimony regarding Topics 6 and 7 of Takeda's 30(b)(6) notice because prior to June 6, neither Roman nor any other Mylan employee possessed "non-privileged information responsive to [these topics] regarding any of Mylan's invalidity contentions other than those set forth in the Detailed Statement that Mylan provided to Takeda in September, 2003." With respect to Roman's testimony regarding Compound 57, Mylan contended that as Roman is "not a person of ordinary skill in the art to which [the `777 Patent] pertains," his statements about such prior art were irrelevant to this action. Finally, Mylan's June 16 response cited only one case, Smithkline Beecham Corp. v. Apotex Corp., No. 98 C 3952, 2000 WL 116082 (N.D. Ill. Jan. 24, 2000), which it stated stood for the proposition that it should not be held to the theories set forth in a notice letter.

  It is unnecessary on this motion to summarize Takeda's June 17 reply, which primarily disputed Mylan's reading of Smithkline Beecham and argued that Mylan's changing its theory of obviousness would exert "palpable" prejudice on Takeda, in any detail. It should be noted, however, that like Mylan, Takeda relied on little case law in its letter briefs on this issue. Takeda's June 14 letter contained no case law, and aside from discussing Smithkline ...

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