Eli Lilly & Co. v. Crabtree

485 F. Supp. 2d 982, 2006 U.S. Dist. LEXIS 96021, 2006 WL 4512969
CourtDistrict Court, S.D. Indiana
DecidedMarch 29, 2006
Docket1:03-cv-00520
StatusPublished
Cited by1 cases

This text of 485 F. Supp. 2d 982 (Eli Lilly & Co. v. Crabtree) is published on Counsel Stack Legal Research, covering District Court, S.D. Indiana primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Eli Lilly & Co. v. Crabtree, 485 F. Supp. 2d 982, 2006 U.S. Dist. LEXIS 96021, 2006 WL 4512969 (S.D. Ind. 2006).

Opinion

ORDER ON PLAINTIFF’S MOTION FOR SUMMARY JUDGMENT DECLARING INVENTORSHIP

McKINNEY, Chief Judge.

This cause is now before the Court on plaintiffs, Eli Lilly & Company (“Lilly”), *984 Motion for Summary Judgment on the Defendants’, Dr. Gerald Crabtree (“Dr. Crabtree”) and Dr. Jorge Plutzky (“Dr. Plutzky”) (collectively, the “Doctors”), Correction of Inventorship Claim. The issue is whether or not the Doctors, should have been named as co-inventors of three Lilly-owned patents: U.S. Patent Nos. 4,775,624 (“the '624 patent”), 5,151,268 (“the '268 patent”), and 5,270,040 (“the '040 patent”) (patents collectively, “patents in suit”). Defendant/Intervenor, the United States (all defendants collectively, “Defendants”), join the Doctors in their opposition to Lilly’s motion for summary judgment on the inventorship issue. The Court held a hearing on this matter on Thursday, March 23, 2006, at which each party answered questions posed by the Court.

For the reasons discussed herein, the Court GRANTS Lilly’s Motion for Summary Judgment Declaring Correct Inven-torship.

I. BACKGROUND

A. THE PATENTS IN SUIT

This lawsuit concerns a dispute over the correct inventors of the technology contained in three patents owned by Lilly: U.S. Patent Nos. 4,775,624 (the “'624 patent”), 5,151,268 (the “'268 patent”), and 5,270,040 (the “'040 patent”) (collectively, the “patents in suit”). The '624 patent, issued to Lilly on October 4, 1988, is based on an application filed by Lilly on February 8, 1985. The '268 patent, issued to Lilly on September 29, 1992, is based on a divisional application of an original application, which was filed July 5, 1988. The '040 patent, issued to Lilly on December 14, 1993, is based on a divisional application, filed July 1, 1992, of the July 5, 1988, application. All of the patents share the identical written description.

All of the patents are related to the method of production, or use of a DNA compound, human protein C. The '624 patent is directed to constructed DNA compounds that encode human protein C, plasmids and host cells comprising such DNA compounds, and methods of using such elements to make human protein C through recombinant techniques. The '624 patent claims a nucleotide sequence that is 461 amino acids long. '624 Patent. The '268 patent is directed to methods of treating or preventing vascular disorders through recombinantly produced human protein C. '268 Patent. And, the '040 patent is directed to the method of production of a pharmaceutical composition, which has recombinantly produced human protein C as its active ingredient. '040 Patent.

B. THE TECHNOLOGY

The Court will forego a lengthy discussion of recombinant DNA technology in favor of a more specific explanation of the parts of the process relevant to the question of inventorship. Knowing the DNA sequence of a particular gene enables the production of the protein encoded by such gene in quantities not otherwise possible. This is accomplished, generally, by inserting the DNA sequence of interest into a suitable host cell, in a process called trans-fection or transformation, and inducing the cell to make the protein in the course of its function as instructed by the DNA. Suitable host cells include bacterium, yeast, plant, or animal cells. Pl.’s Exh. A.5, MacGillvray Rep., at 10. This general concept of inserting and expressing foreign (or exogenous) isolated DNA in host cells is referred to as recombinant DNA technology. Id. at 23-27, 33-34.

In this process, instead of working with genomic DNA, which contains non-coding introns, or mRNA, which does not contain non-coding introns but is unstable, scientists use an artificial DNA construct *985 known as copy or complementary DNA, or-“cDNA.” Pl.’s Exh. A.7, Long Decl. ¶¶ 13-14. cDNA has the same sequence as the DNA of a gene to the extent that sequence actually contains the code for a particular protein, but does not have the non-coding, introns. Pl.’s Exh. A.5, MacGillvray Rep. at 10, 22, 33-36; Pl.’s Exh. A.7, Long Decl. ■ ¶ 14.

To begin a search for and to isolate DNA sequences of interest for insertion into host cells, all or most of the mRNA that exists in a particular living tissue, such as the liver, are converted into cDNA,' creating a “cDNA library.” Pk’s Exh. A.5, MacGillvray Rep. at 40. A cDNA library will contain tens of thousands of so-called colonies, each colony containing a complete or partial DNA sequence (absent introns) ■ that codes for all or part of its related protein. Id. at 40-43.

Once a library has been created, it can be probed, or screened, for a DNA se-. quence of interest. A probe is a single strand of nucleotide constructed to be homologous in sequence to the DNA sequence of interest, using information that may be known, for example, about the amino acid sequence of the target protein or the DNA sequence of the target gene in-a homologous, or closely related, species.' Since a strand of nucleotides tends to bind to strand that are complementary to it, a probe will tend to bind discriminately to. those colonies in the library containing DNA sequences similar to it. For example, a cDNA probe derived from a particular gene in the cow or bovine might be used to' probe a human cDNA library. Because of the high homology or similarity between humans and bovines at a DNA level, any fragment of a human cDNA library that-binds to the bovine probe is likely to,although not definitively, correspond to that gene in humans. Id. at 45-46.

Use of a probe requires a recombinant technique called colony hybridization to encourage bonding of the probe to the specific cDNA of interest. Hybridization — whether same species or cross-species — is a process in which the cDNA of the library is exposed to heat or extreme (either high or low) acidity to cause the cDNA’s two strands to separate, after which the probe is introduced. If some part of the cDNA library is complementary (or close to being complementary) to the probe’s sequence, the probe will bind to that cDNA section, forming a hybrid containing one strand of probe cDNA material bound to one strand of complementary cDNA material from the library. Because the probe is typically tagged in some way, such as with a radioactive isotope, the hybrid can be identified and isolated from the remaining material. Id. at 45-47.

The basic techniques for both same species and cross-species hybridization with cDNA libraries were well known in 1983. Pk’s Exh. A.7, Long Deck ¶ 16. However, the particular conditions that will work for various proteins and species are a matter of trial and error, with a multitude of conditions potentially yielding good results. The same conditions may work in one laboratory and not in another, and developing particular conditions is a matter of routine experimentation for those with experience in the art. Id.; Pi’s. Exh. A.5, MacGillvray Rep., at 46.

Once hybridization has occurred with a particular DNA sequence of interest, there has to be confirmation that the sequence actually relates to the gene that is being sought and is not a false positive. Pk’s Exh. A.7, Long Deck ¶ 15. This can involve sequencing the material, attempting to express the protein with it, or other tests. Id. ¶ 16; Pk’s Exh.

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Bluebook (online)
485 F. Supp. 2d 982, 2006 U.S. Dist. LEXIS 96021, 2006 WL 4512969, Counsel Stack Legal Research, https://law.counselstack.com/opinion/eli-lilly-co-v-crabtree-insd-2006.