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Because a manufacturer secures a patent for a pharmaceutical compound, the patent does not bar competitors from producing a chemical like it, as long as those chemicals have at least one structural difference with the patented compound.


1- Because a manufacturer secures a patent for a pharmaceutical compound, the patent does not bar competitors from producing a chemical like it, as long as those chemicals have at least one structural difference with the patented compound

2- That a manufacturer has secured a patent for one of its pharmaceutical compounds do not bar competitors from producing similar chemicals and having at least one important difference from the patented compound

3- A patent for one of a manufacturer's pharmaceutical compounds does not bar competitors from producing a chemical like the patented compound, as long as the two differ structurally in at least one way

4- When securing a patent for one of a manufacturer's pharmaceutical compounds, competitors are not barred from the production of chemicals such as the patented compound, provided that there is at least one structural difference

5- Even if a manufacturer secures a patent for one of its pharmaceutical compounds, this does not bar competitors from the production of a chemical such as the patented compound, but having at least one structural difference from it
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by GMATGuruNY » Fri Sep 12, 2014 7:28 am
AnuragRatna wrote:Because a manufacturer secures a patent for a pharmaceutical compound, the patent does not bar competitors from producing a chemical like it, as long as those chemicals have at least one structural difference with the patented compound.


1- Because a manufacturer secures a patent for a pharmaceutical compound, the patent does not bar competitors from producing a chemical like it, as long as those chemicals have at least one structural difference with the patented compound

2- That a manufacturer has secured a patent for one of its pharmaceutical compounds do not bar competitors from producing similar chemicals and having at least one important difference from the patented compound

3- A patent for one of a manufacturer's pharmaceutical compounds does not bar competitors from producing a chemical like the patented compound, as long as the two differ structurally in at least one way

4- When securing a patent for one of a manufacturer's pharmaceutical compounds, competitors are not barred from the production of chemicals such as the patented compound, provided that there is at least one structural difference

5- Even if a manufacturer secures a patent for one of its pharmaceutical compounds, this does not bar competitors from the production of a chemical such as the patented compound, but having at least one structural difference from it
A; The patent does not bar competitors from securing a chemical like it.
Here, it seems to refer to the patent, implying that a CHEMICAL is like THE PATENT -- an illogical comparison.
Eliminate A.

A that-clause that serves as the subject of a sentence is considered SINGULAR.
In B, do (plural) does not agree with that a manufacturer has secured a patent (singular).
Eliminate B.

D: When securing a patent for one of a manufacturer's pharmaceutical compounds, competitors...
Here, securing seems to refer to competitors, implying that COMPETITORS are SECURING a patent for one of A MANUFACTURER'S compounds.
Not the intended meaning.
Competitors do not secure a patent for the compound of another manufacturer.
Eliminate D.

In E, this lacks a clear referent.
Eliminate E.

The correct answer is C.
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by Aman Ahuja » Sat Sep 13, 2014 9:23 am
Hi GGNY
I think I haven't ever seen a "the two differ" construction
Can you give some examples that illustrate when this construction is correct