This is the second part of a ruling concerning Patent Term Extensions (PTEs) for Kovaltry. The first part related to when the ninety day period from registration commences and is discussed here.
This second part of the ruling is a precedential decision that rules whether a patent for a bio-pharmaceutical material such as a protein can be can be considered as being a basic patent if there is a previously registered bio-similar molecule; it being appreciated that the amino acid sequence may be the same, but the spatial structure, activity and efficacy may still be different. In view of its legal and financial significance, the decision is fully translated below. We apologize for any incorrect technology.
After the request for a patent term extension for Kovaltry was received from Bayer, the Patent Office issued an Office Action as follows:
Paragraph 6 of the Affidavit appended to the letter of 22 August 2017 notes that there is no other formulation that includes Recombination Human Coagulation Factor VIII, fabricated by the defined cell culture and the defined conditions under which KOVATLRY is manufactured. It is possible that the Blood Coagulation factor claimed in the Application is different from the Blood Coagulation Factors that have been registered, but the Active Ingredient of the Recombination Human Coagulation Factor VIII formulation is registered in the registry of pharmaceutical formulations in various formulations mentioned hereinabove.
The other medical formulations mentioned as including Factor VIII were Novoeight, Octanate 1000, Koate and Kogenate.
On 11 December 2017, the Applicant responded to the Office Action and claimed that the active ingredient, the Recombinant Human Coagulation Factor VIII, is a new material derived from a new genetic engineering process that is protected in the present application, and that Kovaltry is the first formulation that allows its medical usage in Israel, as required for a patent term extension in Section 64D(3) of the Law.
The Applicant explained that Factor VIII is intended for treating Hemophilia A which is characterized by a problem with blood clotting due to a fault in or a lack of Factor VIII. In the new process covered by the Application, the heat shock protein 70 (HSP70) is introduced into the gene of the host cell and additional actions are taken to produce the active ingredient, which creates a new protein Factor VIII, which has a different structure from other proteins that relate to a lack of endogens in the Factor VIII coagulant. The structure of the protein, as applied for in the Application is as follows:
The Applicant further explained that the folding structure of the protein is different due to the manufacturing route, and it attracts a lot of sugar groups (glycans), which allow the protein to automatically fold and provides a pharmokinetic advantage to the protein when compared to other formulations. In this regard, the Applicant notes that most properties, such as the glycan group appended, which have been glycosylated, are relevant to the half-life of the protein in the blood.
The Applicant claims that the registration file of the Kovaltry formulation indicates that the Ministry of Health considered the formulation to have a new active ingredient, and so it had to undergo the specific regulatory requirements of the Ministry of Health. The Applicant relies on the Procedure of the Ministry of Health for registering products of this type; Changes and Innovation in Medical Formulations from 1 February 2015, which differentiates between six different categories for registration.
According to the Applicant, when the Israel Ministry of Health relates to the Recombination Human Coagulation Factor VIII as being a new active ingredient as far as registration in the drug register is concerned, one has to apply a similar rationale when considering the drug for a patent term extension in order to fulfill the purpose of the legislation which is the underlining logic of the patent term extension, which is to compensate the patentee for the period when he cannot market the formulation containing the patented product due to regulatory requirements. The Applicant argues that one should differentiate between medical formulations that have active chemical ingredients that are small molecules, and biological formulations that are differentiated by proteins manufactured in different ways. They argue that the different proteins are typically different from each other in both their structure and their physical properties.
From the claims it transpires that the difference results from the way that the protein is manufactured. The applicant explained and supported their explanation with various appendices, the manufacture of a biological pharmaceutical formulation that includes proteins is very difficult due to the size of the protein, the way it folds, the general structure, changes in translating the chain of amino acids to create the protein, the cell culture used to manufacture the proteins, and so on. All changes lead to changes in the protein itself, in its. glycosylation and medical effect.
Due to these differences, the Applicant alleges that Health Ministries around the world have created different regulatory procedures for biological pharmaceutical formulations. They claim that even though there may be several medical formulations for addressing a lack of a particular enogen, such as Factor VIII, due to the issues raised above, they will be different from each other in practice. Furthermore, their active elements which cause blood clotting will be different and have different international classification.
In their response, the Applicant further explained that there are other formulations that treat Hemophilia A, which are fabricated in different ways such as by separating active ingredients from human plasma, formulations obtained by genetic engineering of part or a full gene, formulations that include healed proteins and formulations that include Factor VIII with additional proteins. The Applicant claims that these formulations are completely different from Kovaltry, despite their purpose being to overcome the endogenic lack of the blood clotting Factor VIII as described above.
The Applicant focused on the differences between the active ingredients of the medical formulations cited by the Examiner and the active ingredient of Kovaltry. As to Kogenate, the Applicant claimed that its active ingredient was different to Factor VIII, even though the sequence of amino acids was the same, since the proteins of the structure are different at the gene level and the protein level. The Applicant appended journal articles that related to the differences between the formulations as an example of improved pharmakinetics.
In light of the above, the Applicant considers that one cannot apply Section 64D(3) of the Law in the same way for biopharmaceuticals when comparing active ingredients with prior art as is done for chemical pharmaceuticals.
In response to these claims, the Deputy Chief Examiner responded in a letter of 31 December 2017, that obtaining the strict regulatory approval required for pharmaceuticals is no indication that a patent term extension is also appropriate. To support this differentiation, the Deputy Chief Examiner referred to 223/09 H. Lundbeck A/S vs. Unipharm ltd et al (22 May 2009).
The letter also notes that the journal papers appended to the response explain that the process for obtaining Factor VIII in the patent in question creates a new protein with a different structure, with glycosylation and different pharmakinetic properties which affect the half-life of the protein in the blood, but do not influence the formulation, and the protein that is the active ingredient of Kovaltry is Factor VIII which exists in Kogenate and other pharmaceutical preparations.
Furthermore, the Deputy Chief Examiner considered that the improved glycosylation or the addition of the HPS70 may affect the folding and could be a new process, but the registration of a medical preparation is given for a formulation and not for the process of manufacture, and differences in the Factor VIII are simply a bi-product of the processing route.
The Deputy Chief Examiner added that though the process of manufacturing the proteins in Kovaltry and Kogenate are different with a difference that expresses itself in yield, better cells and other repeatability differences, the sequence of amino acids is the same, despite the amount of glycans that underwent glycosylation on the proteins So compared to preparations that were registered earlier than Kovaltry, the Deputy Chief Examiner rejected the Applicant’s claims with respect to each of the formulations.
On 7 February 2018, the Applicant submitted a request for a hearing regarding the rejection, and submitted a further statement of claims on 20 February 2018. O 25 February 2018 an ex-partes hearing was held before the Commissioner during which the Applicant reiterated their claims and added the following claims:
Factor VIII is a complex protein and changes in the process result in significant changes to the structure thereof and to the medical affect thereof. Consequently, when comparing twoproteins to ascertain whether or not they are the same material, one has to consider the structure and not merely the sequence of amino acids which is the first stage of characterization, but also the three dimensional form and the intracellular activity.
After the hearing, the Applicant submitted a summary on 1 March 2018 that proposed an appropriate test for considering the novelty of biopharmaceuticals. The proposed test has three levels. Firstly one should consider if the material is a biological medicine. Then one should consider if the protein has a new structure, and finally various tests for determining whether a protein is new or not, such as whether it is a specific protein, whether the regulatory approval was Read the rest of this entry »