Merrill v. I.T.I., Inc.

505 F. Supp. 973, 212 U.S.P.Q. (BNA) 441, 1981 U.S. Dist. LEXIS 11475
CourtDistrict Court, N.D. Illinois
DecidedJanuary 19, 1981
Docket79 C 4346
StatusPublished
Cited by1 cases

This text of 505 F. Supp. 973 (Merrill v. I.T.I., Inc.) is published on Counsel Stack Legal Research, covering District Court, N.D. Illinois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Merrill v. I.T.I., Inc., 505 F. Supp. 973, 212 U.S.P.Q. (BNA) 441, 1981 U.S. Dist. LEXIS 11475 (N.D. Ill. 1981).

Opinion

ORDER

BUA, District Judge.

This patent infringement suit comes before the court on defendant I.T.I., Inc.’s *974 motion for partial summary judgment pursuant to Rule 56, Fed.R.Civ.P. The defendant contends that on the undisputed facts before the court no infringement of the two patents in suit occurred.

The threshold question presented by this motion is the proper construction of the patents in suit. First, the defendant claims that the patents in suit are limited on their face to disclosing the invention of building forms comprising a combination of a wall section and a footing section. Second, the defendant contends that even if this narrow construction of the language of the patent claims would not otherwise be required, the doctrine of file wrapper estoppel mandates such a construction in this case.

The two patents in suit are both owned by the plaintiff, Ronald Merrill. The earlier of the two, Patent No. 3,461,639, disclosed the invention of a product and a process

wherein mesh-like members are manufactured to a desired footing and wall configuration and where, upon deposit of a quantity of concrete material intermediate the mesh-like members, the latter will serve as a form to determine the shape of the footing and wall being formed and will ultimately become a part of the wall structure.

Patent No. 3,638,382 discloses the invention of improvements to the No. ’639 patent.

There are three claims made in the No. ’639 patent. The first claim is for

[a] prefabricated building form for use in the construction of an integral concrete footing and wall structure and comprising in combination,
form members of irregular configuration arranged in a mutually spaced apart manner and each having an upper and lower vertical portion interconnected by a horizontal portion, said spaced apart upper portions disposed to substantially define a wall and said spaced apart lower and horizontal portions disposed to substantially define a footing, wire rods intermittently attached to the opposing surfaces of said former members to rigidly brace said members in fixed relationship while permitting unobstructed concrete flow intermediate the members during pouring and tamping, said form members being of interstitial material whereupon said pouring and tamping a boundary layer of concrete will pass through and envelop said interstitial material (emphasis added). 1

The third claim discloses a method of pouring a concrete structure using the prefabricated building forms disclosed in claims 1 and 2 and specifically claims, as one step of the process;

depositing a quantity of fluid concrete material intermediate the interconnected interstitial material to form simultaneously an integral footing and stem wall when set. (emphasis added).

In American Hoist & Derrick Co. v. Manitowoc Co., 603 F.2d 629, 630 (7th Cir. 1979), the Court of Appeals summarized the elements of patent infringement.

To find infringement, the Court must determine that every element of a claim alleged to be infringed must be found in the accused device, Mobil Oil Corp. v. Filtrol Corp., 501 F.2d 282, 291 (9th Cir. 1974) — that the accused device is a ‘copy either without variation, or with such variations as are consistent with its being in substance the same thing.’ Engelhard Industries, Inc. v. Research Instrumental Corp., 324 F.2d 347, 351 (9th Cir. 1963), quoting Burr v. Duryee, 68 U.S. 531, 573, 1 Wall. 531, 573, 17 L.Ed. 661 (1863).

Reading the patent claims alone, it seems clear that the building forms claimed require a combination of both a wall and a footing section. The proper construction of the claims of No. ’639 become crystal clear when the file wrapper is considered. 2 Giv *975 en the prosecution of the patent application as disclosed by the file wrapper for Patent No. ’639, this court has no trouble in concluding that the scope of the claims in No. ’639 must be limited to (1) building forms constructed of mesh-like members which define both a footing and wall structure and (2) a method of constructing a concrete structure which results in the simultaneous formation of a footing and a wall.

As the Supreme Court has said:

It is, of course, well settled that an invention is construed not only in the light of the claims, but also with reference to the file wrapper or prosecution history in the patent office... . Claims as allowed must be read and interpreted with reference to rejected ones and to the state of the prior art; and claims that have been narrowed in order to obtain the issuance of a patent by distinguishing the prior arc cannot be sustained to cover that which was previously by limitation eliminated from the patent.

Graham v. John Deere & Co., 383 U.S. 1, 33, 86 S.Ct. 684, 701, 15 L.Ed.2d 545 (1966).

In this case the file wrapper for No. ’639 discloses a significant amendment of the claims in the original application. This amendment makes it clear that the examiner considered the use of mesh-like members in building forms for use in constructing concrete structures obvious in light of the prior art. Each of the claims in the original application were rejected. Original claim 1, upon which original claims 2-4 depended, reads as follows:

A building form for use in the construction of a concrete structure and comprising in combination, form members arranged in a mutually spaced apart manner to receive poured concrete material there-between and to generally define the outer wall surfaces of the concrete structure being built, said form members being of interstitial material for the restricted passage therethrough of some of the poured concrete.

Original claim 5, upon which original claims 6 and 7 depended, reads as follows:

The method of constructing a concrete wall structure comprising the following steps; shaping members of interstitial material into the general configuration of an exterior surface of a concrete structure, interconnecting said material to provide a unitary building form having the general outline of the desired concrete structure, and depositing a quantity of fluid concrete material intermediate the interconnected interstitial material.

The patent examiner rejected claims 1, 2, 5, 6 and 7 as being obvious in light of prior art, citing a British patent and 35 U.S.C.

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Cite This Page — Counsel Stack

Bluebook (online)
505 F. Supp. 973, 212 U.S.P.Q. (BNA) 441, 1981 U.S. Dist. LEXIS 11475, Counsel Stack Legal Research, https://law.counselstack.com/opinion/merrill-v-iti-inc-ilnd-1981.