Granted patent and patent applications filed by Pioneer Hi-Bred Int.
The United States patent discloses a co-transformation method in which an Agrobacterium strain has two binary vectors, each of them carrying a T-DNA region with a different heterologous sequence, and a helper plasmid. A plant scorable marker used for the selection of the transformed plant tissue is one of the heterologous sequences that can be present in the T-DNA region. The heterologous regions integrate into the genome of a plant in an unlinked manner, facilitating the retention of the genes of interest and the elimination of undesirable genes in the progeny.
The PCT application, also converted into European, Canadian and Australian patents, are also directed to the same topic.
Patents on modified binary vectors and methods – Granted patent and patent applications filed by Pioneer Hi-Bred Int.
Claims in plain English
Specific Patent Information
Patent Number | Title, Independent Claims and Summary of Claims | Assignee | ||
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US 6265638
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Title – Method of plant transformation
The present United States patent claims:
Without specifying that limits of the heterologous sequences in claim 1, possible ambiguities arise. For example, how large a sequence does a heterologous sequence have to be before it falls within the scope of the claim? A single nucleotide? The claim also could cover scenarios where the two vectors each have identical heterologous sequences and so be anticipated by art to a single type of binary plasmid vector including a heterologous sequence provided with a helper plasmid. |
Pioneer Hi-Bred International |
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EP 1117816
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Title – Method of plant transformation
Designated contracting States at the time of grant are: Austria, Belgium, Switzerland, Cyprus, Germany, Denmark, Spain, Finland, France, United Kingdom, Greece, Ireland, Italy, Liechtenstein, Luxembourg, Monaco, Netherlands, Portugal, Sweden. |
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AU 764100
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Title – Method of plant transformation
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CA 2344700
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Title – Method of plant transformation
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WO 2000/18939
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Title – Method of plant transformation
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Note: Patent information on this page was last updated on 27 February 2006.