Monday, 16 January 2017

The Novartis Case

Novartise File product  patent applcation in 1998.
India was in transion phase beteen 1995 to 2005 under TRIPS agreement and some act mad before 2005 also played very crucial role.
The patent application claimed the final form of Gleevec (the beta crystalline form of imatinib mesylate)
2003 they got EMR.

When examination of Novartis' patent application began in 2005, it came under immediate attack from oppositions initiated by generic companies that were already selling Gleevec in India and by advocacy groups. The application was rejected by the patent office and by an appeal board. The key basis for the rejection was the part of Indian patent law that was created by amendment in 2005, describing the patentability of new uses for known drugs and modifications of known drugs. That section, Paragraph 3d, specified that such inventions are patentable only if "they differ significantly in properties with regard to efficacy." At one point, Novartis went to court to try to invalidate Paragraph 3d; it argued that the provision was unconstitutionally vague and that it violated TRIPS. Novartis lost that case and did not appeal. Novartis did appeal the rejection by the patent office to India's Supreme Court, which took the case.

The Supreme Court case hinged on the interpretation of Paragraph 3d. The Supreme Court decided that the substance that Novartis sought to patent was indeed a modification of a known drug (the raw form of imatinib, which was publicly disclosed in the 1993 patent application and in scientific articles), that Novartis did not present evidence of a difference in therapeutic efficacy between the final form of Gleevec and the raw form of imatinib, and that therefore the patent application was properly rejected by the patent office and lower courts.


Novartise argued even though polymorphs  discussed in Zimmerman patents no directly mentioned and no person  having knowledge of it was ableo sepwerate it with current knoledge.Furtermore it argued it physical efficacy.
The arguments were countered by the fact that  it was prior art as the research was published in science and Zimmerman patents and it doesnt shown therapeutic efficacy.

Supreme Court decided the matter de novo looking into matters of both fact and law.
The court first analysed the question of prior art by looking into Zimmerman patent and the related academic publications. It was clear from the Zimmerman patent that imatinib mesylate itself was not new and did not qualify the test of invention as laid down in section 2(1)(j) and section 2(1)(ja) of the Patents Act, 1970.[37] The court then examined the beta crystalline form of imatinib mesylate and wrote that it, "for the sake of argument, may be accepted to be new, in the sense that it is not known from the Zimmermann patent. (Whether or not it involves an “inventive step” is another matter, and there is no need to go into that aspect of the matter now). Now, the beta crystalline form of Imatinib Mesylate being a pharmaceutical substance and moreover a polymorph of Imatinib Mesylate, it directly runs into section 3(d) of the Act with the explanation appended to the provision".[38]
In applying 3(d) of the Act, the Court decided to interpret "efficacy" as "therapeutic efficacy" because the subject matter of the patent is a compound of medicinal value. Court acknowledged that physical efficacy of imatinib mesylate in beta crystalline form is enhanced in comparison to other forms and that the beta crystalline form of imatinib mesylate has 30 per cent increased bioavailability as compared to imatinib in free base form.[39] However, as no material had been offered to indicate that the beta crystalline form of imatinib mesylate will produce an enhanced or superior efficacy (therapeutic) on molecular basis than what could be achieved with imatinib free base in vivo animal model, the court opined that the beta crystalline form of imatinib mesylate, does not qualify the test of Section 3(d).
Thus in effect, Indian Supreme Court upheld the view that under Indian Patent Act for grant of pharmaceutical patents apart from proving the traditional tests of novelty, inventive step and application, there is a new test of enhanced therapeutic efficacy for claims that cover incremental changes to existing drugs.[42]
The Court took pains to point out that the subject patent application was filed during a time of transition in Indian patent law, especially with regard to striking Section 5, which had barred product patents and adding section 3(d), for which there was no case law yet.[43] The Court also took care to state the decision was intended to be narrow: "We have held that the subject product, the beta crystalline form of Imatinib Mesylate, does not qualify the test of Section 3(d) of the Act but that is not to say that Section 3(d) bars patent protection for all incremental inventions of chemical and pharmaceutical substances. It will be a grave mistake to read this judgment to mean that section 3(d) was amended with the intent to undo the fundamental change brought in the patent regime by deletion of section 5 from the Parent Act. That is not said in this judgment."