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Transcript of 1 Single Nucleotide Polymorphisms (SNP) Gary Jones SPE, Technology Center 1600 [email protected]...
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Single Nucleotide Polymorphisms(SNP)
Gary Jones
SPE, Technology Center 1600
(703) 308-1152
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Communication and Communication and CooperationCooperation
Issues in Biotechnology are complex Communication
Interviews Focus on Invention
Cooperation Open, frank discussions Practice Specialists
Prosecution Agree on the invention Work out the claims Identify the issues
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A Gene by Another Name????
Single Nucleotide Polymorphism -
A single base difference in a DNA sequence among
individuals.
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SNPs
Association of sequence variations with heritable phenotypes
Used in genotyping, Genomic and drug research Clinical diagnostics Markers in identifying genes and genetic
differences that may determine the response of a given patient to disease and disease treatment.
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Interesting Fact
SNPs are predicted to occur once every 100-300 bases at the gene level.
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Private and Public Sector Efforts
2,841,419 SNPs currently (as of 3/22/01) in public database
SNP Consortium Objective: To identify 300,000 SNPs and map
150,000 SNPs evenly distributed throughout the human genome at a 95 percent confidence level.
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Magnitude
15-20% of patent applications in Art Unit 1655, or about 100-200 applications per year and climbing.
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Patentability Issues
Novelty Obviousness Utility Written Description
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Novelty
Claim:
An isolated and purified nucleic acid comprising SEQ ID NO: 1.
Fact: SEQ ID NO: 1 differs from the prior art sequence by one nucleotide.
The prior art sequence is a breast cancer related DNA.
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Novelty
If the prior art does not teach the specific polymorphism, a claim to an isolated nucleic acid with the polymorphism is usually found to be allowable over the prior art.
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Obviousness
Claim: An isolated and purified DNA comprising SEQ ID NO: 1. The prior art teaches the source of DNA (e.g. a specific
patient’s sample) The specification teaches that the SNP containing DNA was
isolated from this same source. The prior art might provide the motivation to go to this
particular source of DNA to isolate additional variants of the gene.
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Novelty
Claim: An isolated nucleic acid encoding SEQ ID NO: 2. Fact: SEQ ID NO: 2 is a known, well characterized
protein. The prior art teaches SEQ ID NO: 2 and also teaches
a DNA that encodes SEQ ID NO: 2, however the DNA encoding SEQ ID NO: 2 in the prior art is not the same as that which applicant has disclosed.
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Novelty
If the nucleotide change does not result in an amino acid change, the prior art reference is anticipatory.
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Utility Considerations for Single Nucleotide Polymorphisms
(SNPs)
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Scenarios
A disclosure details single nucleotide polymorphisms present relative to a reference nucleic acid molecule. The reference nucleic acid:
1. Encodes a protein with a well-established utility or which is supported in the specification by a specific, substantial, and credible utility.
A. The polymorphism does not affect the encoded protein. B. The polymorphism alters the nature of the encoded protein in an undisclosed manner.
2. Does not encode a protein with a specific, substantial, and credible utility or a well-established utility, but the disclosed polymorphism is disclosed as correlative to some disease or condition.
3. Does not encode a protein with a specific, substantial, and credible utility or a well-established utility, and the disclosed polymorphism is not disclosed as correlative to some disease or condition.
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Scenario 1A
The reference nucleic acid (SEQ ID NO: 1) encodes a protein (SEQ ID NO: 2) with a well-established utility or which is supported in the specification by a specific, substantial, and credible utility. The polymorphism does not affect the encoded protein.
Claim: A nucleic acid comprising SEQ ID NO: 1, wherein the nucleotide at position 128 is replaced with a G.
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Scenario 1A
Based upon the fact pattern, the claimed nucleic acid will still encode a protein that has a specific, substantial, and credible utility or a well-established utility.
Therefore, there is no utility (or enablement or written description) issue.
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Scenario 1B
The reference nucleic acid (SEQ ID NO: 1) encodes a protein (SEQ ID NO: 2) with a well-established utility or which is supported in the specification by a specific, substantial, and credible utility. The polymorphism alters the nature of the encoded protein in an undisclosed manner.
Claim: A nucleic acid comprising SEQ ID NO: 1, wherein the nucleotide at position 128 is replaced with a G.
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Scenario 1B
Based upon the fact pattern, the claimed nucleic acid will not encode a protein that would support a specific, substantial, and credible utility or well-established utility for the claimed polymorphic molecule.
Therefore, there is a utility question that is addressed in Scenario 2 or 3.
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Scenario 2
A disclosure details single nucleotide polymorphisms present relative to a reference nucleic acid molecule. The reference nucleic acid does not encode a protein with a specific, substantial, and credible utility or a well-established utility, but the disclosed polymorphism is disclosed as correlative to some disease or condition.
Claim: A nucleic acid comprising SEQ ID NO: 1, wherein the nucleotide at position 128 is replaced with a G.
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Scenario 2
Based upon the fact pattern, the claimed nucleic acid will not encode a protein that would support a specific, substantial, and credible utility or well-established utility for the claimed polymorphic molecule.
However, the nucleic acid consisting of SEQ ID NO: 1, wherein the nucleotide at position 128 is replaced with a G, does have a specific, substantial, and credible utility.
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Scenario 2
Note that the appropriate scope of the claim will be determined by consideration of: 35 U.S.C. §112, first paragraph, adequate written
description 35 U.S.C. §112, first paragraph, enablement 35 U.S.C. §102/103 - nature of prior art
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Scenario 3
A disclosure details single nucleotide polymorphisms present relative to a reference nucleic acid molecule. The reference nucleic acid does not encode a protein with a specific, substantial, and credible utility or a well-established utility, and the disclosed polymorphism is not disclosed as correlative to some disease or condition or other patentable utility.
Claim: A nucleic acid comprising SEQ ID NO: 1, wherein a G is present at position 128.
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Scenario 3
Based upon the fact pattern, the claimed nucleic acid will not encode a protein that would support a specific, substantial, and credible utility or well-established utility for the claimed polymorphic molecule.
In addition, there is no disclosed specific, substantial, and credible or well-established utility for the nucleic acid of SEQ ID NO: 1, wherein the nucleotide at position 128 is replaced with a G.
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Scenario 3
Therefore, the claim will be rejected under 35 U.S.C. §101 as failing to be supported by a specific, substantial, and credible utility or a well-established utility.
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Scenario 3: What can you do?
Provide evidence that the claimed nucleic acid would have a use that is supported by the as-filed specification, e.g. A particular useful population marker A particular disease marker
Be careful that your use is supported by the specification or submit evidence that the use would have been “well-established”.
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Written Description and SNPs
Scenario 1
An isolated polynucleotide comprising SEQ ID NO: 1.
SEQ ID NO: 1 is a 100mer obtained from a human glioblastoma cDNA library.
SEQ ID NO: 1 is homologous to a known DNA molecule that encodes a useful protein.
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Claim Scope
Claim reads on any nucleic acid comprising SEQ ID NO: 1GeneFull ORFFusion constructs, etc.cDNAs
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Single Species
Actual reduction to practice of a single species.SEQ ID NO: 1.
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Scenario 2
An isolated polynucleotide comprising SEQ ID NO: 1.
SEQ ID NO: 1 is a Full length Open Reading Frame (ORF) cDNA sequence that is shown in the specification to encode SEQ ID NO: 2 (a member of a well known family of proteins).
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Written Description
Claim: An isolated polynucleotide comprising SEQ ID NO: 1.
SEQ ID NO: 1 is a full length ORF that encodes SEQ ID NO: 2
Claim reads on the ORF with any additional elements The disclosed invention is based upon the ORF; any
additional elements would have been considered conventional and well known in the art
Adequate Written Description
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