Court Opinion

ID: 1393214
Source: CourtListenerOpinion
Date Created: 2013-10-30 05:56:33.354003+00
Date Added: 2024-06-11T18:04:14.755940
License: Public Domain

662 F.Supp. 1420 (1987)
INTRA CORPORATION and Eagle Technologies, Inc., Plaintiffs,
v.
HAMAR LASER INSTRUMENTS, INC., Defendant.
No. 86-CV-2414-DT.
United States District Court, E.D. Michigan, S.D.
June 17, 1987.
*1421 *1422 Alex Rhodes, Rhodes and Boller, Southfield, Mich., for plaintiffs.
Robert Powell, Dickinson, Wright, Moon, Van Dusen & Freeman, Detroit, Mich., for defendant.

MEMORANDUM OPINION AND ORDER
WOODS, District Judge.
Plaintiffs Intra Corporation and Eagle Technologies, Inc. (hereinafter collectively referred to as "Intra") seek a declaratory judgment that two patents issued to Martin R. Hamar, president of defendant Hamar Laser Instruments, Inc. ("Hamar"), are invalid, unenforceable, and not infringed by Intra's laser alignment system. Intra alleges that the subject matter of both patents would have been obvious at the time they were made to a person having ordinary skill in the art of machine alignment technology. Intra further alleges that Hamar engaged in inequitable conduct in the Patent Office, falsely marked unpatented equipment, and breached an express warranty by selling an alignment system that was unfit for its intended use. Hamar, on the other hand, claims that Intra willfully infringed both patents by disassembling its laser alignment system and using the information obtained to manufacture and sell infringing laser alignment systems.
The Court, having conducted a trial and having heard arguments by counsel, submits the following findings of fact and conclusions of law:

A. General Findings

1. Intra is a Michigan corporation with its principal place of business in Westland, Michigan.
2. Eagle is a Michigan corporation with its principal place of business in Westland, Michigan.
3. Hamar is a Connecticut corporation with its principal place of business in Wilton, Connecticut.
4. Intra has been in existence for approximately ten years.
5. The primary business activity of Intra is the design and manufacture of mechanical and electronic gauges and gauging systems for the automotive, aircraft, and defense industries.
6. Eagle was incorporated by the owners of Intra in May, 1985, for the purpose of designing, developing, and selling non-contact gauging systems.
7. Hamar has been in existence for approximately twenty years.
8. The exclusive business activity of Hamar has been the design, manufacture, and sale of laser alignment systems.
9. Martin R. Hamar, the president of Hamar, has had several patents issue, including: U.S. Patent No. 3,902,810; U.S. Patent No. 4,045,129; U.S. Patent No. *1423 4,297,031; U.S. Patent No. 4,382,680; U.S. Patent No. 4,483,618; and U.S. Patent No. 4,566,202.

B. The Patents in Suit

10. Hamar is the owner of the two patents in suit, namely, U.S. Patent No. 4,566,202 (the '202 patent) and U.S. Patent No. 4,483,618 (the '618 patent).
11. The '202 patent covers a laser apparatus for projecting the axis of rotation of a rotating tool holder.
12. The '618 patent covers an apparatus and method for determining whether the axis of a laser beam is passing through a desired measurement point.

i. The '202 Patent

13. United States Patent Application Serial No. 588,624 was filed by Hamar on December 6, 1983, and issued as U.S. Patent No. 4,566,202 on January 28, 1986.
14. Martin R. Hamar conceived of the inventions claimed in the '202 patent during January of 1983.
15. Hamar acknowledged in the application that
Laser alignment systems have been developed which have many uses including the alignment of parts for assembling machines such as turbines. Currently systems of laser beams and targets are available to facilitate the alignment of parts along an axis as well as assessment and correction of pitch and yaw.... Despite the many very desireable [sic] features of the available laser or mechanical alignment devices or techniques, none have been able to efficiently and accurately enable true projection of an axis of rotation and/or quick accurate alignment of a work piece with an axis of rotation.
16. The application as filed included sixteen (16) apparatus claims and one (1) method claim.
17. An Information Disclosure Statement, filed with the application, revealed four patentsall of which had been issued to Martin R. Hamar: U.S. Patent No. 4,045,129; U.S. Patent No. 4,297,031; U.S. Patent No. 3,902,810; and U.S. Patent No. 4,382,680.
18. U.S. Patent No. 3,902,810 was the most relevant of the patents disclosed to the Patent Examiner. It showed the combination of a laser emitter and a rotably mounted electronic target, made up of four photocells. The target produces electrical output signals used to identify the location of points at which the laser beam strikes the target. The laser emitter and target aligns members along a nonrotating axis.
19. None of the four patents listed in the disclosure statement showed a laser adapted for mounting to a rotating member, or suggested the combination of a laser adapted to be amounted in a rotating member and a photocell target. There was no illustration of a photocell target in the application. The word "photocell" was not included in the application as originally filed. Moreover, none of the four disclosed patents related to the alignment of machine tools.
20. The application was classified in Class 33 of U.S. Patents and assigned to Primary Examiner Martin in Group Art Unit 246.
21. On February 8, 1984, Examiner Martin in his initial office action rejected all seventeen (17) claims. According to the Examiner:
2. Claims 1-16 and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Moller [U.S. Patent No. 2,146,906] or Raiha [U.S. Patent No. 4,438,567] in view of Eggenschwyler [U.S. Patent No. 3,801,205]. Moller or Raiha each discloses a projection device which is mounted in the chuck of a machine tool. The main difference between the subject matter sought to be patented and Miller or Raiha is the type of light. It would not be patentable to substitute for [the] light sources of Moller or Raiha, the common expedient of a laser as in Eggenschwyler, since such a substitution would be obvious to one having ordinary skill in this art. The manner of using recited in lines 17-22 of independent claim 1, and lines 9-13 of independent claim 9 cannot be relied upon to patentably distinguish *1424 the invention over prior art which shows the structure to be obvious. In regard to claims 4, 15, and 16, the selection of the type of laser clearly falls within the ordinary skill of a person working in the art; and besides produces nothing unobvious in the combination. Also, in regard to claims 5, 6, and 7 the selection of the type of power supply falls within the skill of an ordinary person working in this art. In regard to claim 17, the recited steps do not define anything unobvious over the prior art.
3. Claim 17 is rejected under 35 U.S.C. 103 as being unpatentable over Griffin [U.S. Patent No. 2,557,029]. Griffin discloses an optical centering gauge of using anticipation the recited steps. The structure of the elements used in performing the method cannot be relied upon to patentably distinguish the method over Griffin.
Hamar's attorney did not contest the above assertions of the Examiner.
22. On May 2, 1985, Hamar's attorney and Martin Hamer conducted an interview with Examiner Martin in the U.S. Patent and Trademark Office. During the interview, Martin Hamer demonstrated the Hamar spindle laser apparatus. The Examiner's record of the interview indicates that an agreement was reached that "Claims which define the target `T 204' in combination with the laser would be more favorably received."
23. Following the interview, Hamer's attorney filed an amendment in which independent claims 1 and 9 were amended to add the element of a photocell target. Claim 17 was cancelled. Two target drawings from Hamar's earlier U.S. Patent No. 3,902,810 were added to more elaborately describe the Hamar T-204 target described in the original application. Minor amendments to the specifications also were entered to reference a photocell target and read-out meter. No additional prior art was added into the record. All of the amended claims were allowed.

ii. The '618 Patent

24. United States Patent Application Serial No. 381,078 was filed by Hamar on May 24, 1982, and issued as U.S. Patent No. 4,483,618 on November 24, 1984.
25. The patent application, as filed, contained 23 claims.
26. On March 14, 1983, Martin Hamer through his attorneys filed a prior art statement with the U.S. Patent and Trademark Office, disclosing three of Hamar's earlier patents: U.S. Patent No. 3,902,810; U.S. Patent No. 4,045,129; and U.S. Patent No. 4,294,031.
27. On February 29, 1984, the U.S. Patent and Trademark Office issued its first office action in Application Serial No. 381,078. Claims 19 and 20 were allowed as filed. Claims 10 and 16 were objected to as containing allowable subject matter but being dependent from a rejected base claim. Claims 21-23 were rejected under 35 U.S.C. § 102 as being anticipated by U.S. Patent No. 3,765,764 to Niss. Claims 1-9, 11-15, and 17-18 were rejected under 35 U.S.C. § 103 as being obvious over U.S. Patent No. 3,902,810 to Hamar, U.S. Patent No. 3,799,674 to Guillet, et al., U.S. Patent No. 3,765,764 to Niss, and U.S. Patent No. 3,824,020 to Pease. The Examiner cited U.S. Patent No. 3,723,013 to Stirland, et al., U.S. Patent No. 3,734,627 to Edwards, and U.S. Patent No. 4,105,339 to Wirtanen as showing relevant alignment and measurement systems. According to the Examiner:
It is known to dispose a detector relative to a position to be measured and direct a beam of light along a path to the detector, using the detector to determine the position of the detector relative to the light beam: this is shown by Hamar and Guillet et al. Using this to measure two or more points relative to each other, as in Niss, is obvious. It is notorious in the art that plane mirrors can be used to reflect light from one path to another, Guillet et al and Pease both use plane mirrors for this purpose. In the situation in which it is not convenient to place a detector directly on the location being measured, it is obvious and straight forward to use, a mirror to reflect the light to the detector.
*1425 28. On March 16, 1984, Hamar's attorney conducted a personal interview with the U.S. Patent Examiner assigned to application Serial No. 381,078. The Examiner in his interview summary record stated that "Claims setting forth the probe end, mirror, detector, and their relationships, including the equal distance between the mirror and probe end and mirror and detector would appear to distinguish over the art of record."
29. Following the interview, Hamar's attorney amended claims 1-12, 15-19 and 21-23. The amendments limited the claims by requiring an equal distance between the mirror and detector and detector and probe end in order to distinguish the claims over the prior art found by the Examiner. All of the amended claims were allowed.

C. Activities of Intra

30. During 1984, a Ford Motor Company manufacturing plant in Ypsilanti, Michigan, was unable to meet production quotas for finished engine distributor housings. The distributor housings were made from aluminum castings on a Kingsbury transfer line.
31. A Kingsbury transfer line is a production machining line where parts sequentially move from one machining station to another for various machining operations. Transfer line machining requires the precise alignment of each successive spindle mounted tool.
32. At the Kingsbury transfer line at the Ford Ypsilanti plant, aluminum castings mounted on pallets sequentially passed and were transformed into finished distributor housings.
33. In August of 1984, Bruce Park (hereinafter "Park"), plant engineering manager at the Ford Ypsilanti plant, asked Intra to make proposals for aligning the Kingsbury transfer line.
34. Park identified Hamar as a source of laser alignment equipment for Intra's proposals.
35. After Park requested that Intra make proposals, Intra's general manager, David Duey (hereinafter "Duey") met with John Shewell (hereinafter "Shewell"), a sales representative of Hamar.
36. Shewell gave Duey specification sheets of Hamar's Model 800 Spindle Laser and T-216 Target.
37. Shewell told Duey and Battista to conduct all business with Hamar through him.
38. Intra submitted two proposals to Ford, namely, a first proposal based in part on a laser system, and a second proposal employing electronic LVDT probes and analog bar columns. The proposal stated that
Applying laser technology for aligning production machine tool spindles is very new and has very little history. Several companies who deal with laser applications were contacted. Only one was found that was developing laser technology for this application. Consequently there is no board [sic] base knowledge to draw from and the possibility of unconsidered problems and cost[s] probably exists.
39. Park selected the laser proposal, notified Intra to proceed, and issued a purchase order with a delivery date of January, 1985.
40. Park's purchase order did not require Intra to use Hamar's laser alignment equipment.
41. Prior to August, 1984, Intra had never designed, manufactured, or sold laser alignment systems.
42. In October, 1984, Intra gave Shewell a $13,430.00 order for Hamar's Model 800 Spindle Laser, Model T-216 4-Axis Target, and related equipment (hereinafter "equipment"). Hamar shipped the equipment to Intra on October 9, 1984.
43. After receiving the equipment, Intra could not get the equipment to function properly, despite using the instruction manual and spending several days working on the equipment.
44. Intra personnel engaged in "minimal" disassembly of the Hamar spindle laser system at that time.
*1426 45. Intra made several phone calls to Hamar, but never informed Hamar as to the difficulties it was having with the equipment. Rather, Intra notified Shewell that Hamar's equipment was defective. Shewell, however, refused to give assistance unless Intra paid him a $75.00 per hour consulting fee.
46. Intra refused Shewell's offer, preferring instead to retain the services of a laser consultant, Gordon M. Brown (hereinafter "Brown"), to examine the equipment and make it operational.
47. Brown was unable to make the Hamar equipment work when he arrived at Intra. With the assistance of Intra employees, Brown partially disassembled the Hamar system to enable himself and certain Intra employees to determine the structure of the Hamar system.
48. Brown made numerous changes to the Hamar equipment. As a result of these changes, Intra personnel believed that they had developed a spindle laser alignment system distinguishable from the Hamar system.
49. In the beginning of 1985, Intra instructed its patent attorney to conduct a patent search for a laser alignment system having an emitter and photodetector. The search did not disclose a Hamar patent since the Hamar '202 patent had not yet issued.
50. On or about the first quarter of 1985, Intra began to design and develop its own laser alignment system.
51. On approximately November 10, 1985, Intra completed engineering drawings entitled Intra Corp. # I-2426, which showed a laser emitter and target to be manufactured by Intra. The I-2426 drawings included the legend "Pat. Pending," suggesting that Intra intended to file a patent application on the system that their search showed to be patentable.
52. The laser emitter shown in the I-2426 drawings and the laser target for use therewith is known as the Quadra-Beam laser emitter and the Quadra-Beam target.
53. Intra's drawings of the Quadra-Beam target includes a nonessential shim near the reflecting prism which corresponds to a nonessential shim found by Intra in the Hamar T-216 target that Intra had disassembled.[1]
54. Intra invested over $300,000.00 in designing and developing its Quadra-Beam laser alignment system.
55. Unknown to Intra, Hamar obtained possession of the Intra laser alignment system for the Kingsbury transfer line in January, 1986.
56. Hamar kept possession of the Intra Kingsbury alignment system for five months. During that time the equipment was disassembled, photographed, and tested.[2]
57. Before returning the Intra Kingsbury alignment system, Hamar removed Intra's identification labels and replaced them with Hamar labels.
58. On April 24, 1986, Hamar's attorney sent Intra a letter with copies of the patents in suit. In the letter Hamar's attorney asserted that the laser emitter and targets of the Kingsbury alignment system were Hamar's products, accused Intra of violating the federal trademark statute by falsely designating the origin of the laser emitted and target, and informed Intra that the emitter and target were covered by the '202 and '618 patents.
59. On May 1, 1986, Intra's attorney responded in writing to the letter of Hamar's attorney and informed Hamar that Intra planned to manufacture and market laser alignment equipment.
*1427 60. On May 12, 1986, Intra sold one Quadra-Beam laser alignment system to General Motors of Canada and another Quadra-Beam laser alignment system to Hydra-Matic Division of GMC. On June 23, 1986, and on June 28, 1986, Intra sold a second and third Quadra-Beam laser alignment system to General Motors of Canada. On July 14, 1986, Intra sold a Quadra-Beam laser alignment system to a Ford Motor Company plant in Cincinnati, Ohio. Each Quadra-Beam laser alignment system sold by Intra between May 12, 1986, and July 14, 1986, ranged in price from approximately $16,000.00 to $22,000.00. Approximately $5,000.00 to $7,000.00 of the total price of the Quadra-Beam system consisted of the target, target accessories and readout units (i.e., those devices covered by the '618 patent). Hamar charges similar prices for its laser alignment systems. The average sales price of a target, target accessories and readout unit is $6,000.00. Total sales of targets and related equipment by Intra was approximately $30,000.00 (5 units × $6,000.00). Hamar's gross profit percentage on sales of its laser alignment system is 60%. Hamar's lost profits resulting from Intra's sales of laser targets and related equipment is $18,000.00.
61. Intra sold five Quadra-Beam laser alignment systems after having received notice and copies of the '618 patent and the '202 patent, and without having received a written legal opinion or a legal opinion as to the validity of the '618 and '202 patents.
62. On June 2, 1986, Hamar's attorney responded to the May 1, 1986 letter of Intra's attorney. Hamar's attorney accused Intra of reworking and relabeling Hamar's equipment and informed Intra that a copy of the letter was being forwarded to Intra's customer, the Ford Motor Company. The June 2, 1986 letter by Hamar's attorney again admonished Intra to respect Hamar's patents.
63. The last shipment of a Quadra-Beam laser alignment system was on July 14, 1986, at which time Intra voluntarily discontinued all further sales and production of laser alignment systems pending resolution of this case.

D. Intra's Infringement of the Patents in Suit

i. Intra's Infringement of the '202 Patent Claims

64. The claimed invention of the '202 patent is illustratively set forth in claim 9 as follows:
*1428 
65. The Intra Quadra-Beam system includes all of the elements of claim 9 of the '202 patent: a laser apparatus for projecting the axis of rotation onto an object spaced therefrom, a lasing element secured to the mounting member and disposed to project a laser beam away from the rotating member toward the object, the laser beam approximately aligned with the axis of rotation of the rotating member, and a photocell target upon which the laser beam projected by the laser will trace an annulus on the target, with the center of the annulus lying on the axis of rotation of the rotating member.
66. Claim 14 of the '202 patent adds a description of the mounting means of claim 9 as follows:
14. A laser apparatus as in claim 9 wherein the mounting member comprises an elongated mounting stud and a planar mounting surface, said mounting stud being connected to and extending perpendicularly from said mounting surface, said mounting stud being substantially collinear with the laser beam projected by the lasing element.
67. The Intra Quadra-Beam system includes a mounting member as described in claim 14. The four essentially symmetrical laser beams of the Intra Quadra-Beam system are functionally equivalent to a laser beam collinear with the longitudinal axis of the laser emitter mounting stud.
68. Claim 1 of the '202 patent states:
1. A laser apparatus for effectively projecting the axis of rotation of a rotating tool or work piece holder onto an object spaced therefrom, said apparatus comprising:
a housing having first and second opposed ends;
a generally elongated mounting stud fixed connected to and extending from the first end of said housing, said mounting stud being of a size and shape to be held by the rotating tool or work piece holder such that the longitudinal axis of the mounting stud is approximately aligned with the axis of rotation of the rotating tool or work piece holder;
a lasing element mounted in said housing and disposed to project a laser beam out *1429 of the second end of said housing and substantially collinear with the longitudinal axis of the mounting stud; and a target disposed on said object, said target including photocell means responsive to the laser beam to produce electrical output signals capable of identifying locations of the points at which the target is impinged by the laser beam projected by the lasing element whereby when the mounting stud is held by the rotating tool or work piece holder, the laser beam projected by the lasing element will trace an annulus on the target disposed on the object, with the center of the annulus defining a point on a projection of the axis of rotation of the rotating tool or work piece holder.
69. The Intra Quadra-Beam system includes a housing having first and second opposed ends, an elongated mounting stud of a size that is able to be held by a rotating tool (with the longitudinal axis of the stud being aligned with the axis of rotation of the rotating tool), and a lasing element mounted in the housing and disposed to project a laser beam out the end of the housing opposite the end containing the stud. The laser beam in the Quadra-Beam system is broken into four beams that travel parallel to the longitudinal axis of the mounting stud. The Quadra-Beam system includes a photocell target that is impinged by the laser beam. The tool in which the laser is housed is rotated to describe an annulus, the center of which defines the axis of rotation of the tool holder.
70. Claim 2 of the '202 patent states:
2. A laser apparatus as in claim 1 wherein said mounting stud is a cylinder.
The Quadra-Beam system emitter contains a cylindrical stud.
71. Claim 3 of the '202 patent states:
3. A laser apparatus as in claim 2 wherein the first end of the housing further includes a planar mounting surface disposed substantially perpendicular to the mounting stud.
The Quadra-Beam system emitter has a flat housing surface with a mounting stud extending perpendicularly from that surface.
72. Claim 4 of the '202 patent states:
4. A laser apparatus as in claim 1 wherein the lasing element is a single transverse mode diode laser.
The Quadra-Beam system contains a Mitsubishi single transverse mode diode laser.
73. Claim 5 of the '202 patent states:
5. A laser apparatus as in claim 1 further comprising means for electrically connecting said lasing element to an external power source.
The Quadra-Beam system has electrical conductors extending from the laser for connection to an external power source.
74. Claim 8 of the '202 patent states:
8. An apparatus as in claim 1 further including at least one adjusting screw for adjusting the alignment of the lasing element with respect to the mounting stud.
The Quadra-Beam system has adjusting screws that allow for adjustment of the lasing element with the mounting stud.
75. Claim 10 of the '202 patent states:
10. A laser apparatus as in claim 9 wherein the rotating member is a chuck or collet, and wherein the mounting member comprises an elongated mounting stud adapted to be mounted to the chuck or collet.
The Quadra-Beam system emitter has a mounting stud.
76. Claim 11 of the '202 patent states:
11. A laser apparatus as in claim 10 wherein the mounting stud is cylindrical.
The Quadra-Beam system emitter mounting stud is cylindrical.
77. Claim 15 of the '202 patent states:
15. A laser apparatus as in claim 14 wherein the lasing element is a solid state stage [sic] diode laser.
The laser of the Quadra-Beam system emitter is a solid state diode laser.

ii. Intra's Infringement of the '618 Patent Claims

78. The claimed invention of the '618 patent is illustratively set forth in claim 3 as follows:
*1430 
The Intra Quadra-Beam target includes each element or the equivalent of each element of claim 3. The Quadra-Beam target consists of an optical device with a detector for use with a laser beam. The Quadra-Beam target also contains a mirror adapted to reflect the laser beam towards the detector and the measurement point, which is the equivalent of the probe described in the '618 patent. The Intra Quadra-Beam target also includes a mounting member that extends beyond the location of the measurement point (probe point). Functionally, the mirror projects on the target the image that would appear at the measurement point, as explained in the '618 patent.
79. Claim 9 of the '618 patent provides as follows:
9. The optical device of any one of claims 1-8 further comprising collimator means for detecting the angle of incidence of said laser beam on said target.
The Intra Quadra-Beam target also contains a collimator for detecting the angle of incidence of the laser beam.
80. The claimed invention of the method of the '618 patent is set forth in claim 11 as follows:
11. A method of detecting whether the axis of a laser beam is passing through a desired measurement point, comprising the steps of;
(i) disposing at least one mirror with plane surface located a preselected distance from said desired measurement point;
(ii) directing the axis of the laser beam toward said desired measurement point while reflecting said laser beam off said at least one mirror;
(iii) detecting the location of said reflected laser beam with an optical detector having a target point located thereon separated from said surface on said mirror along the optical path of said reflected laser beam a distance substantially equal to said preselected distance; and
(iv) adjusting the point of reflection of said laser beam on said at least one mirror until the reflected laser beam falls on said target point on said optical detector.
Use of the Intra target operates to perform the method of claim 11 (as well as claim 15) of the '618 patent and detects whether the axis of a laser beam is passing through a desired measurement point by disposing a mirror a particular location from the desired measurement point, directing the axis of the laser beam toward the measurement point while reflecting the laser beam off the mirror to an optical detector located an equal distance from the mirror as is the measurement point, and adjusting the assembly to make the desired corrections. The Intra target also performs the step of detecting the angle of incidence of the laser beam by thereafter placing a collimator in front of the target.
81. Claim 1 of the '618 patent states:

*1431 1. An optical device for use with a laser beam to locate the position of a measurement point, comprising:
detector means having a target point for sensing a laser beam;
mirror means for reflecting a laser beam toward said detector means;
a probe element having an end point adapted to be placed on a desired measurement point; and
means for mounting said detector means, said at least one mirror and said probe element with respect to each other such that a laser beam directed toward said desired measurement point and reflected by said mirror means will fall on said target point when said probe end point is placed on said desired measurement point.
The Quadra-Beam system target comprises a photocell electronic detector for sensing a laser beam, a mirror to reflect the laser beam toward the detector, a measurement point in the housing equivalent to a probe, and a means to mount the detector. The arrangement of the detector, mirror, and measurement point is such that the laser beam impinges on the detector at a location identical to the measurement point.
82. Claims 2 and 4 of the '618 patent respectively state:
2. The optical device of claim 1 wherein said target point of said detector means is spaced from the surface of said mirror means a distance along the optical path of said reflected laser beam equal to the distance of said surface from said desired measurement point whereby the virtual location of said target point at said desired measurement point will be substantially unaffected by movements of said optical device as long as said probe end point remains on said desired measurement point.
4. The optical device of claim 3 wherein said optical distance between said given point and said target point of said optical detector is fixed so that said target point is virtually located at said desired measurement point when said probe end point is placed on said measurement point, the virtual location of said target point at the desired measurement point being substantially unaffected by movements of said optical device as long as said probe end point remains on said desired measurement.
Regardless of the orientation of the Quadra-Beam target, the measurement point or probe point will be represented on the detector as the virtual image of the measurement or probe point by the laser beam.
83. Claim 6 of the '618 patent states:
6. The optical device of claim 4 wherein said device further comprises housing means for fixedly accommodating said optical detector, said at least one mirror and said probe means, and window means in said housing means for passing a laser beam to said one mirror.
The Quadra-Beam target is comprised of a unit in which all the components are within the housing.
84. Claim 7 of the '618 patent states:
7. The optical device of claim 6 wherein said distance between said given point and said end point of said probe means is generally along a first axis, said optical distance is generally along a second axis, and the angle between said first and second axes is approximately 90°.
The Quadra-Beam target is arranged to direct the laser beam at the desired measurement (probe) point and to reflect the beam 90° to the detector.
85. Claim 12 of the '618 patent states:
12. The method of claim 11 wherein said target point on said optical detector and said one mirror are fixed with respect to each other and are moveable with respect to said desired measurement point as long as said mirror is disposed said predetermined distance from said desired measurement point.
The Quadra-Beam system functions to measure a particular point on a work piece for alignment with a spindle. The measurement (probe) point must be located equidistant from the mirror surface to the distance the detector is displaced from the mirror.
86. Claim 13 of the '618 patent states:

*1432 13. The method of claim 12 wherein said step of reflecting includes reflecting said laser beam off a single mirror.
The Quadra-Beam target has only one mirror.

E. Scope and Content of the Prior Art

i. The '202 Patent

87. The '202 patent contains independent claims 1 and 9. As quoted above, claim 9 sets forth a device for projecting the axis of rotation of a rotating member (or tool) by mounting a laser on a rotating tool such that the laser is approximately aligned with the axis of rotation of the rotating tool and projects a laser beam toward a target placed on a work piece. The laser beam projected by the imperfectly mounted laser traces an annulus on the target. Photocells located on the target identify the location of points at which the laser beam strikes the target. The center of the annulus lies on the axis of rotation of the rotating tool. In claim 1, the device is described as consisting of a housing with two ends. Attached to the first end of the housing is a mounting stud. The mounting stud can be attached to the rotating tool so that its longitudinal axis aligns with the axis of rotation of the rotating tool. A laser mounted inside the housing projects a beam out of the second side of the housing.
88. Martin R. Hamar authored six printed publications in the period of 1968 to 1976 relating to laser alignment of machine tools: Laser AlignmentCurrent Uses and Applications, Society of Manufacturing Engineers Technical Paper MR74-967 (1974); Laser Alignment  Current Uses and Applications  1976, Society of Manufacturing Engineers Technical Paper MR76-864 (1976); Laser Alignment in the Paper Industry, 56 Tappi 90-91 (July, 1973); Laser Alignment in Industry, Society of Manufacturing Engineers Technical Paper IQ69-819 (1969) (summarized in Precision Alignment With a Laser, Machine Design 136-38 (Feb. 5, 1970)); Laser Alignment in Industry, American Society of Tool and Manufacturing Engineers Technical Paper MR68-408 (1968).
89. Hamar's attorney was aware of the printed publications of Martin R. Hamar but did not disclose any of the publications to the Examiner during the prosecution of the application for the '202 patent. According to Hamar's attorney, each of the printed publications discloses a cylindrical laser in combination with a photocell target and, as such, are merely cumulative to United States Patent No. 3,902,810 to Hamar, which Hamar's attorney did reveal to the Examiner.
90. Each of the Hamar publications discloses a cylindrical laser in combination with a photocell target. Specifically, Laser Alignment  Current Uses and Applications1976, Laser Alignment in the Paper Industry and Precision Alignment With a Laser show how machine tools can be aligned by placing an electronic target on the tool point or spindle of a machine. According to the publications, a laser is positioned so that the beam is parallel to the line of motion of the tool or table. Once the laser and target are positioned, the machine is driven by its motors just as if, for example, it were cutting metal. The target contains four photocells. Opposing pairs of cells are interconnected and able to produce signals showing the displacement of the center of the laser beam with respect to the center (or reference point) of the four target cells. The signals from the cells are fed into a strip chart recorder, which records the vertical and horizontal shifting of the target as the machine is driven from one end of its motion to the other.
91. United States Patent No. 3,902,810, which Hamer's attorney revealed to the Examiner, discloses a system and method for aligning a turbogenerator or other apparatus having a centerline that sags in a verticle direction. In particular, the '810 patent reveals how a cylindrical laser can be used in such a system. The system is illustratively set forth in claim 5 as follows:
5. An alignment system for [an] apparatus, said system comprising stationary means for producing a beam of coherent light, means for leveling said beam so that it is generally normal to a radial line extending from the center of *1433 the earth and passing a point adjacent said beam producing means, means disposed adjacent said stationary means for producing a beam of coherent light for moving said beam parallel to itself in a horizontal plane, means disposed adjacent said stationary means for producing a beam of coherent light for moving said beam parallel to itself in a vertical plane, and means for detecting the location of said beam relative to the center of a bore wherein the detecting means includes a rotably mounted target that, in one position, is adapted to detect the relative position of the beam with respect to the center of the bore and, in a second position, allows the beam to pass there-through.
Once the first bore on the machine is aligned, the target is moved to allow the laser beam to pass through to the next bore containing a target. Once that bore is aligned, its target is moved to allow the beam to pass to a third bore, and so on.
92. The targets shown in the '810 patent consist of four electronic photocells. The '810 patent appropriately cites to United States Patent No. 3,535,525 to Minkowitz, which contains a detailed description of an electronic target.
93. As noted above, the Examiner in his initial Office Action rejected claims 1-16 and 17, as originally proposed, as being obvious over the patents of Moller or Raiha in view of Eggenschwyler. The Examiner also rejected claim 17 as being obvious over the patent of Griffin. Moller and Griffin disclose the use of optical telescopes mounted in rotating tool holders in combination with targets for projecting the axes of the tool holders onto the targets. The Examiner found that
The main difference between the subject matter sought to be patented and Moller or Raiha is the type of light. It would not be patentable to substitute for light sources of Moller or Raiha, the common expedient of a laser as in Eggenschwyler, since such a substitution would be obvious to one having ordinary skill in this art.
As earlier noted, Hamar's attorney did not object to the statements by the Examiner.
94. When the application was filed, a photocell type target was never specifically mentioned in any of the original seventeen claims, nor was it illustrated in the drawings. After the Examiner's initial Office Action, Martin R. Hamar and his attorney had a personal interview with the Examiner. At the interview, Martin Hamar amended claim 1 to include the recitation of a target including a photocell means. The Examiner's comment on the Interview Summary Record states that claims that further defined the target in combination with the laser would be more favorably received. The comment indicated that the Examiner would not approve claims that did not include a photocell target as one of the elements. Martin Hamar's printed publications, however, show that he was aware that the combination of a laser and photocell type target was well-known in the art of machine alignment technology, but withheld that fact from the Examiner. In other words, the printed publications of Martin R. Hamar were more material to the examination of the application for the '202 patent than the four Hamar patents submitted with the disclosure statement, and Hamar and his attorney knew or should have known that the Examiner would have considered them material to the issuance of the patent.
95. Intra further contends that the invention in the '202 patent, even with the amendments by Martin Hamar and his attorney, would have been obvious at the time the invention was made to a person having ordinary skill in the art. To that end, Intra offers numerous patents and publications not considered by the Examiner.
96. Laser Beam Centering System, Mechanical Engineering (June, 1977), shows a laser attached to the protruding end of a ship's main engine crankshaft. From that position, the laser projects a laser beam into the hollow center of a boring bar. Several laser beam detecting devices inside the boring bar monitor the alignment of the boring axis in the ship's *1434 remaining propellor shaft housings. The publication does not disclose whether the laser should be rotated, or whether the axis of the center of rotation should be found.
97. Thomas E. Prince, Laser Helps Bore Straight Holes, American Machinist (Aug. 9, 1971), uses a rotating target as part of an alignment device for deep hole boring operations. As a photodetector mounted in the rotating boring head of the boring machine moves in an "error circle," the dc component of the detector output voltage is used (after amplification) to drive two alignment screws on the alignment stand holding the laser. As a result, the laser is aligned with the exact center of rotation and made perfectly parallel with the axis of rotation of the boring machine.
98. Intra also introduced several manuals on calibration procedures printed by Grumman Corporation. The manuals cover laser calibration procedures. Significantly, the Grumman publications in three or four instances disclose the rotation of a laser emitting body at 180° and at 360°.
99. Japan Patent Publication No. Sho 55 (1980)87113 to Ono discloses the rotation of a laser emitting body and describes how the laser beam projects a circle or annulus on a photocell. One shows how a rotating laser, which projects a circle or an annulus on a photodetector, can be used to find the perpendicular point on a machine located above a laser centering apparatus. In this patent, a laser is placed in a barrel. The barrel in turn is placed inside a larger barrel. The inner barrel containing the laser is placed on bearings so that it can be rotated. The laser beam emitted by the rotated laser is focused on a photodetector installed horizontally at the center of a machine located above the laser. The machine is centered by rotating the laser such that the beam projects a circle on the light detector. Metering devices compute and display the center point of the circle. The center gives the true perpendicular point on the machine above the laser emitting apparatus.
100. Intra additionally offers several other patents in its effort to establish the obviousness of the invention contained in the '202 patent. United States Patent No. 3,551,057 to Hamilton teaches the use of a cylindrical laser and a photocell target in place of the well-known alignment telescope and target.
101. United States Patent No. 3,635,108 to Prince discloses a device for boring a straight hole. Prince shows a long, hollow boring bar containing a cutter head with a photodetector attached to the aft side of the cutter head. A laser projects a beam onto the photodetector. The output from the photodetector is fed into a control unit, which operates a hydraulic valve. The hydraulic valve, in turn, operates a pair of pusher pads on the boring bar to direct the cutter head in a straight path.
102. United States Patent No. 3,646,838 to Andersen suggests the interchanging of a laser source and target. Specifically, Andersen discloses a device by which two hollow rotable shafts are aligned by use of a laser and target. The shafts are adjusted as the target is moved at various points from the inner to the outer end of the shaft. Andersen suggests that the alignment be checked by interchanging the positions of the laser and the target. Once the shafts are aligned and securely fixed, a tool arm is mounted to the outer end of one or both of the rotable shafts. As a result, any section of the outside surface at one end or both ends of the mill body can be machined with assurance of the parallelism and cocentricity of the surfaces machined.
103. United States Patent No. 3,718,398 to Becraft et al. discloses a boresight alignment device and gives a method for aligning a laser beam by rotating the laser through 360°.
104. United States Patent No. 3,535,525 to Minkowitz, which is cited in the '810 patent that Hamar disclosed to the Examiner, sets forth a device for determining the location of the center of a laser beam emitted by a laser located a given distance from an object being aligned. The object is aligned coursely so that the laser beam strikes a target placed on the object. The target contains four generally planar and rectangular photocells positioned about a reference point. The first and second photocells *1435 are positioned diagonally along one axis (e.g., Y axis), while the third and fourth photocells are positioned diagonally along a perpendicular axis (e.g., X axis). Each photocell has a pair of output terminals for providing levels of positive and negative electrical potentials with light impinges upon the cell. The output terminals are attached to a device that displays the direction and magnitude of the displacement of the laser beam from the reference point lying at the center of the perpendicular axes.
105. United States Patent No. 3,601,476 to MacKenzie discloses the use of adjusting screws for aligning lasing elements disposed substantially colinear with the axis of housings.
106. Examiner Martin, approximately two weeks after the trial in this case, granted Intra's request for reexamination of the '202 patent. According to the Examiner, consideration of the Hamilton, Prince, Andersen, Becraft et al., Ono, and Japan Publication No. Sho 58 (1983)  90437 to Nakanishi, as well as printed publications Laser Helps Bore Straight Holes, Laser Alignment in the Paper Industry, Laser Beam Centering System, Laser AlignmentCurrent Uses and Application1976, raised a "substantial new question of patentability as to claims 1-16 of the ['202 patent] since these documents are clearly material to the examination of the claims of the Hamar patent as pointed out in the request [for reexamination]."[3]

ii. The '618 Patent

107. The target described in the '618 patent is designed for situations where it is difficult to place the plane of the target's light sensitive photodetector cells exactly on a measurement point. The target claimed in the '618 patent compensates for the actual physical dimensions of the detector by placing a mirror in the path of the laser beam at a preselected distance from the desired measurement point. The photodetector is placed in line with the laser beam reflected from the mirror so that the distance from the mirror to the photodetector is equal to the distance from the mirror to the desired measurement point. In short, the photodetector functions as if it were physically located at the desired measurement point even though its circuitry and housing would make location of the photodetector at the desired measurement point virtually impossible.
108. U.S. Patent No. 3,902,810 to Hamar, U.S. Patent No. 3,799,674 to Guillet, U.S. Patent No. 3,765,764 to Niss, and U.S. Patent No. 3,824,020 to Pease use a "see thru" target and a mirror to reflect light to a detector where it is inconvenient to place a detector on a position to be measured.
109. U.S. Patent No. 3,723,013 to Stirland and the Cubic-Precision See Thru target, which was not considered by the Examiner, do not set forth an equal distance relationship between the target and mirror and the photodetector and mirror. Moreover, Stirland and the Cubic-Precision See Thru target are not designed to be machined and must be squared in place before being used.

F. Differences Between the Prior Art and the Claimed Invention

i. The '202 Patent

110. The '202 patent suggests the mounting of a laser in a spindle for rotation to define an annulus on a target and to find the axis of rotation of the spindle. Hamilton, Ono, Laser Beam Centering System, and the Hamar articles show the use of cylindrical-shaped lasers in combination with photocell detectors. Ono and the Grumman manuals reveal the rotation of a laser emitting body to project an axis of rotation onto photocell targets. The Grumman manuals show a laser mounted in a rotating machine tool. Ono shows how a laser beam emitted from a rotating laser forms an annulus or circle on a photocell target and gives the means for finding the axis of rotation of the rotating laser. In *1436 short, there is little difference between the Ono and Grumman references and the claimed invention of the '202 patent.[4]

ii. The '618 Patent

111. The claimed invention for the '618 patent is a device for locating a virtual image on a target located remote from the measurement point. By specifically disposing the reflective surface of the mirror at equal optical distances from both the desired measurement point and the optical detector, the '618 patent compensates for movement or misalignment of the probe or mounting member about the measurement point and relative to the axis of the incoming laser beam. Indeed, the virtual detector of the '618 patent enables exact laser alignment despite misalignment of the photodetector target by a transfer line technician. In contrast, none of the prior art offered by Intra sets forth an equal distance relationship between the mirror and desired measurement point and the mirror and optical detector.

G. Level of Ordinary Skill in the Pertinent Art

112. The prior art relevant to the '202 and '618 patents involves all machine alignment technology.
113. The main problem encountered in the art is the need for precise alignment of a tool and a work piece. Although simple manual or mechanical alignment can be used to determine the point at which a cutting tool will strike a work piece, those methods are unacceptable where, for example, a rotating cutting tool and a work piece are separated by a great distance, the cutting tool must be angularly aligned to the surface of the work piece, or the cutting tool must perform a precise machining operation on an interior portion of a work piece.
114. Alignment originally was accomplished through the use of simple tools such as tight wires, levels, and straight edges. Optical tooling became popular beginning in the 1920's. Lasers were first used to align machines beginning in the late 1960's, although they became more prevalent in the 1970's and early 1980's as their price declined. Present laser alignment systems are more sophisticated than the earlier versions. Current commercially available laser alignment systems include the Hewlett-Packard 5526A Laser Measurement System, Hamar's Model 711 Alignment Laser System and Model 800 Spindle Laser System, and Nac HSV-2000 Dual Camera High Speed Video System.
115. A person having ordinary skill in the relevant art has an undergraduate engineering degree or its equivalent, plus experience in the use and application of laser devices for alignment and measurement.
116. An individual can be trained in roughly two or three days to align machines using these alignment systems. An example of such an individual is Hamar's witness Robert Bald. Robert Bald is a high school graduate with one year of college. He has had six to seven years experience in the use of mechanical equipment for aligning tools as the sole employee of a company that provides machine alignment. His experience with laser alignment equipment, however, is limited to Hamar's Model 711 and Model 800 laser alignment systems. Such an individual has less than ordinary skill in the art of laser equipment.
117. Gordon Brown and Martin R. Hamar are persons of extraordinary skill in the art.

H. Secondary Considerations

118. The Hamar laser alignment system covered by the '202 and '618 patents were first sold by Hamar in December of 1983. *1437 Hamar has achieved substantial commercial success during the three years since that system was introduced.
119. Prior attempts to align precisely the machine stations of a transfer line met with limited success. Intra personnel having ordinary skill in the art of machine alignment technology acknowledged as late as August of 1984 that the use of lasers for aligning spindles of a machine was a new and untested technology, and could result in unforeseen problems and costs. Intra personnel searched for other sources of spindle lasers but discovered that Hamar was the only source of laser equipment suitable for aligning machines along a transfer line. The Hamar Model 800 Spindle Laser and Model T-216 Target (and related equipment), as modified by Intra's consultant Gordon Brown, satisfied the need for precise alignment of the Kingsbury transfer line at the Ford Ypsilanti Plant.
120. Prior to the development of the Hamar spindle laser system, there was some movement among those involved in laser alignment technology away from the position that lasers should be firmly set in a fixed position and toward the belief that movement of an alignment laser could be useful in certain circumstances.

I. Hamar Warranty

121. As noted above, Intra personnel could not get the Hamar equipment to work despite spending several days working on the equipment.
122. The Hamar warranty stated that Hamar's obligation was "limited to making good at its factory any instrument or other article of equipment which shall within one year after shipment of each instrument or other article or equipment to the original purchaser be returned intact to it ..." The warranty further stated that it "shall not apply to any instrument or other article of equipment which shall have been repaired or altered outside the HAMAR LASER INSTRUMENTS, INC., factory or authorized service station...."
123. Although Intra made several phone calls to Shewell and attempted to call Hamar, Intra never made Hamar aware of the difficulties it was having with the equipment.
124. Intra never returned the equipment to Hamar.
125. Intra disassembled the Hamar equipment instead of having Hamar or Shewell attempt to repair the equipment.

J. Patent Marking

126. The patent marking on the Hamar spindle laser stated "U.S. and Foreign Patents and Patents Pending." The first sale of a Hamar spindle laser occurred on December 2, 1983. The application that matured into Hamar's '202 patent was filed on December 6, 1983 and issued on January 28, 1986. The application that matured into the '618 patent was filed on May 24, 1982 and issued on November 20, 1984.
127. Martin R. Hamar admitted that Hamar shipped 29 unpatented Model 800 Spindle Laser and Model T-216 Target systems marked with the incorrect patent marking before the issue dates of either patent.
128. There was no evidence that the false marking was done for the purpose of deceiving the public.

K. Infringement

129. This Court has jurisdiction over this proceeding under 28 U.S.C. §§ 1331, 1338(a) & 2201-2202. Venue is proper under 28 U.S.C. § 1391.
130. A person asserting a patent right must prove infringement by a preponderance of the evidence. Hughes Aircraft Co. v. United States, 717 F.2d 1351, 1361 (Fed.Cir.1983). Infringement may be shown in one of two ways: "Literal infringement" requires a showing that an accused device falls within the scope of the asserted claims as properly interpreted. Envirotech Corp. v. Al George, Inc., 730 F.2d 753, 758 (Fed.Cir.1984). Alternatively, infringement under the doctrine of "equivalents" may be shown if an accused device "performs substantially the same function in substantially the same way to obtain the *1438 same result." Graver Tank & Mfg. Co. v. Linde Air Products Co., 339 U.S. 605, 608, 70 S.Ct. 854, 856, 94 L.Ed. 1097 (1950).
131. In determining literal infringement, the Court must first define the patented invention as indicated by the language of the claims (a question of law), and then the trier of fact must decide whether the claims cover the accused device (a question of fact). Envirotech Corp., 730 F.2d at 758. A claim is construed in light of its language, the other claims, the prior art, the prosecution history, and the specification, not in light of the accused device. SRI Int'l v. Matsushita Elec. Corp. of America, 775 F.2d 1107, 1118 (Fed.Cir. 1985) (en banc); McGill, Inc. v. John Zink Co., 736 F.2d 666, 673 (Fed.Cir.), cert. denied, 469 U.S. 1037, 105 S.Ct. 514, 83 L.Ed.2d 404 (1984); Fromson v. Advance Offset Plate, Inc., 720 F.2d 1565, 1569 (Fed.Cir.1983). A claim should be construed as it would be by an individual of ordinary skill in the art. Id. at 1574. Only after a claim has been construed should it be applied to the accused device to determine infringement. SRI Int'l, 775 F.2d at 1118.
132. According to the Court in Graver:
What constitutes equivalency must be determined against the context of the patent, the prior art, and the particular circumstances of the case. Equivalence, in the patent law, is not the prisoner of a formula and is not an absolute to be considered in a vacuum. It does not require complete identity for every purpose and in every respect. In determining equivalents, things equal to the same thing may not be equal to each other and, by the same token, things for most purposes different may sometimes be equivalents. Consideration must be given to the purpose for which an ingredient is used in a patent, the qualities it has when combined with the other ingredients, and the function which it is intended to perform. An important factor is whether persons reasonably skilled in the art would have known of the interchangeability of an ingredient not contained in the patent with one that was.
A finding of equivalence is a determination of fact. Proof can be made in any form: through testimony of experts or others versed in the technology; by documents, including texts and treatises; and, of course, by the disclosures of the prior art. Like any other issue of fact, final determination requires a balancing of credibility, persuasiveness and weight of evidence.
339 U.S. at 609-10, 70 S.Ct. at 856-57.
133. Intra's Quadra-Beam laser alignment systems infringed the claims of the '202 and '618 patents. Alternatively, the Quadra-Beam systems sold by Intra were equivalent to the laser emitter and target shown in the '202 and '618 patents. Nevertheless, Intra is liable to Hamar only for its infringement of the '618 patent since Hamar's '202 patent is invalid and unenforceable.

L. Willful Infringement

134. Upon receipt of actual notice of another's patent rights, a potential infringer has an affirmative duty of due care to determine whether he is infringing. Bott v. Four Star Corp., 807 F.2d 1567, 1572 (Fed.Cir.1986). The affirmative duty normally includes the obtaining of competent legal advice before engaging in possibly infringing activity, although the failure to obtain advice of counsel alone does not require in every case a finding of willful infringement. Rolls-Royce Ltd. v. GTE Valeron Corp., 800 F.2d 1101, 1109 (Fed. Cir.1986). Other factors include whether the infringer deliberately copied the designs and ideas of another and the infringer's behavior as party to the litigation. Bott, 807 F.2d at 1572. No "hard and fast rule per se" governs the determination of willfulness, Rolls-Royce Ltd., 800 F.2d at 1108; rather, the trier of fact must consider the totality of circumstances in deciding whether a reasonable person would prudently have conducted his affairs with confidence that a court would hold the patent enforceable. Central Soya Co. v. Geo A. Hormel & Co., 723 F.2d 1573, 1577 (Fed. Cir.1983).
*1439 135. Intra intentionally infringed both the '202 and the '618 patents by selling four infringing alignment systems after receiving notice of the Hamar patents and having failed to obtain a carefully considered legal opinion that its device did not infringe a valid claim of a patent. Intra, however, is liable to Hamar only for its willful infringement of the '618 patent since the '202 patent is invalid and unenforceable. Moreover, Intra voluntarily ceased manufacture and sale of infringing systems during the pendency of this litigation, and presented an arguable basis for a finding of obviousness as to the '618 patent. In view of these considerations, the measure of damages for Intra's infringement of the '618 patent shall be doubled to $36,000.00. Additionally, Intra shall be enjoined from further infringement of the '618 patent.

M. Validity of the Hamar Patents

136. Patentability depends on utility, novelty, and nonobviousness. 35 U.S.C. § 101-103. Once issued, a patent is presumed valid. Id. § 282.
137. "The burden of establishing invalidity ... rest[s] on the party asserting such invalidity." Id. The burden must be carried by clear and convincing evidence. E.g., SSIH Equipment, S.A. v. United States International Trade Commission, 718 F.2d 365, 375 (Fed.Cir.1983).

i. Anticipation

138. A challenger may sustain the burden imposed by § 282 by establishing that a claimed invention was anticipated by prior art. 35 U.S.C. § 102. "A claim is anticipated only if each and every element as set forth in the claim is found, either expressly or inherently described, in a single prior art reference." Verdegaal Brothers, Inc. v. Union Oil Co. of Cal., 814 F.2d 628, 631 (Fed.Cir.1987); see also Rolls-Royce Ltd. v. GTE Valeron Corp., 625 F.Supp. 343, 352 (E.D.Mich.1985), aff'd, 800 F.2d 1101 (Fed.Cir.1986).
139. Testimony of anticipation, without contemporaneous documentary or physical evidence showing a reduction to practice and prior public use, is insufficient to establish anticipation within the meaning of § 102. Rolls-Royce, Ltd., 625 F.Supp. at 353.
140. Moreover, a patent claim is not anticipated by the accidental, incidental, or unintentional duplication of its features in a prior use. See Tilghman v. Proctor, 102 U.S. (12 Otto) 707, 711, 26 L.Ed. 279 (1881).
141. Neither the '202 nor the '618 patent was anticipated by prior art.

ii. Obviousness

142. A challenger may also sustain the burden imposed by § 282 by establishing the obviousness of an invention. A challenger must show that the "difference between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains." 35 U.S.C. § 103. The § 103 determination of obviousness is a conclusion of law based on factual findings. See, e.g., Graham v. John Deere Co., 383 U.S. 1, 17, 86 S.Ct. 684, 693, 15 L.Ed.2d 545 (1966); Panduit Corp. v. Dennison Mfg. Co., 810 F.2d 1561, 1566-68 (Fed.Cir.1987); cf. id. at 1567-68 (factual findings must be made by proper application of certain legal standards).
143. In making factual findings, the factfinder must consider (1) the scope and content of the prior art; (2) the differences between the prior art and claimed invention; (3) the level of ordinary skill in the pertinent art; and (4) secondary considerations, which may serve as indicia of obviousness. Secondary considerations that may be relevant include commercial success due to the invention; failure of others; long felt but unsolved needs; copying the invention in preference to the prior art; movement of the skilled in a different direction; and other circumstantial evidence of nonobviousness. Graham, 383 U.S. at 17-18, 86 S.Ct. at 693-94; Panduit Corp., 810 F.2d at 1569; Windsurfing International, Inc. v. AMF, Inc., 782 F.2d *1440 995, 999-1000 (Fed.Cir.), cert. denied, ___ U.S. ___, 106 S.Ct. 3275, 91 L.Ed.2d 565 (1986); Environmental Designs v. Union Oil Co. of Cal., 713 F.2d 693, 695 (Fed.Cir. 1983), cert. denied, 464 U.S. 1043, 104 S.Ct. 709, 79 L.Ed.2d 173 (1984); see also United States v. Adams, 383 U.S. 39, 52, 86 S.Ct. 708, 15 L.Ed.2d 572 (1966) (disbelief by experts); Johns-Manville Corp. v. Guardian Industries Corp., 586 F.Supp. 1034 (E.D.Mich.) (existence of a crowded art in which many patents exist but do not mention claimed invention), modified, 223 U.S. P.Q. 974 (E.D.Mich.1984), aff'd without opinion, 770 F.2d 178 (Fed.Cir.1985).
144. A challenger is more likely to sustain the burden imposed by § 282 by producing prior art or other evidence that was not considered or more pertinent than that considered by the patent examiner. W.L. Gore & Associates, Inc. v. Garlock, Inc., 721 F.2d 1540, 1553 (Fed.Cir.1983), cert. denied, 469 U.S. 851, 105 S.Ct. 172, 83 L.Ed.2d 107 (1984); Aktiebolaget Karlstads Mekaniska Werkstad v. United States International Trade Commission, 705 F.2d 1565, 1577 (Fed.Cir.1983).
[Section] 282 creates a presumption that a patent is valid and imposes the burden of proving invalidity on the attacker. That burden is constant and never changes and is to convince the court of invalidity by clear evidence. Deference is due the Patent and Trademark Office decision to issue the patent with respect to evidence bearing on validity which it considered but no such deference is due with respect to evidence it did not consider. All evidence bearing on the validity issue, whether considered by the PTO or not, is to be taken into account by the tribunal in which validity is attacked.
American Hoist & Derrick Co. v. Sowa & Sons, 725 F.2d 1350, 1360 (Fed.Cir.), cert. denied, 469 U.S. 821, 105 S.Ct. 95, 83 L.Ed.2d 41 (1984).
145. The question of obviousness must be determined by reference to a hypothetical person having ordinary skill in the art, not the extraordinary man in the art or the actual inventor. Standard Oil Co. v. American Cynamid Co., 774 F.2d 448, 453-54 (Fed.Cir.1985); Kimberly-Clark Corp. v. Johnson, 745 F.2d 1437, 1449-54 (Fed.Cir.1984).
The person of ordinary skill is a hypothetical person who is presumed to be aware of all the pertinent prior art. The actual inventor's skill is not determinative. Factors that may be considered in determining level of skill include: type of problems encountered in art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field. Not all such factors may be present in every case, and one or more of them may predominate.
Custom Accessories v. Jeffrey-Allan Industries, Inc., 807 F.2d 955, 962-63 (Fed. Cir.1986) (footnotes omitted).
146. To reach a proper conclusion
the decisionmaker must step backward in time and into the shoes worn by that "person" when the invention was unknown and just before it was made. In light of all the evidence, the decisionmaker must then determine whether the patent challenger has convincingly established, 35 U.S.C. § 282, that the claimed invention as a whole would have been obvious at that time to that person. 35 U.S.C. § 103.
Panduit, 810 F.2d at 1566 (footnote omitted) (emphasis in original). The decisionmaker cannot rely on hindsight or use the patent in suit as a guide in evaluating prior art. Rolls-Royce Ltd. v. GTE Valeron Corp., 625 F.Supp. at 348; Multifastener Corp. v. MacLean-Fogg Co., 572 F.Supp. 418, 427 (E.D.Mich.1983).
147. Intra relies on a combination of prior art references in establishing the obviousness of the claimed inventions. A court cannot hold that a challenger has carried the heavy burden of showing obviousness merely because a patent consists of combinations of old elements. Most patentable inventions combine old elements. The fact that a patent combines teachings from prior art references is irrelevant to the legal determination of obviousness under *1441 § 103 and the factual inquiries set forth in Graham:
A traditional problem with focusing on a patent as a "combination of old elements" is the attendant notion that patentability is undeserving without some "synergistic" or "different" effect. Here, the district court spoke of the need for "a new and useful result." Such tests for patentability have been soundly rejected by this court. Though synergism is relevant when present, its "absence has no place in evaluating the evidence on obviousness."
Custom Accessories, 807 F.2d at 959-60 (footnotes omitted). "The critical inquiry is whether `there is something in the prior art as a whole to suggest the desirability, and thus the obviousness, of making the combination.'" Fromson v. Advance Offset Plate, Inc., 755 F.2d 1549, 1556 (Fed.Cir. 1985) (citation omitted) (emphasis in original); see also In re Geiger, 815 F.2d 686, 688 (Fed.Cir.1987); Ashland Oil, Inc. v. Delta Resins & Refractories, 776 F.2d 281, 293 (Fed.Cir.1985), cert. denied, ___ U.S. ___, 106 S.Ct. 1201, 89 L.Ed.2d 315 (1986); Lindemann Machinefabrik GMBH v. American Hoist & Derrick Co., 730 F.2d 1452, 1462 (Fed.Cir.1984).
148. "Things believed to be known to those skilled in the art are often asserted by the examiner to be `well known' or `matters of common knowledge'.... If the applicant traverses such an assertion the examiner should cite a reference in support of his or her position.... Failure of the applicant to seasonably challenge such assertions establishes them as admitted prior art." Manual of Patent Examining Procedure § 706(a) (5th ed. 1986). See also, e.g., In re Ahlert & Kruger, 424 F.2d 1088 (C.C.P.A.1970).
149. Intra has established by clear and convincing evidence that the claimed invention of the '202 patent as a whole would have been obvious, at the time the invention was made, to a person of ordinary skill in the art. Accordingly, the '202 patent is hereby declared to be invalid.
150. Intra has not carried its heavy burden of establishing the obviousness of the '618 patent.

iii. Inequitable Conduct

151. Inequitable conduct by a patentee in procuring a patent from the Patent Office renders a patent unenforceable and provides a defense against a charge of infringement. J.P. Stevens & Co. v. Lex Tex. Ltd., Inc., 747 F.2d 1553, 1560-61 (Fed.Cir.1984), cert. denied, 474 U.S. 822, 106 S.Ct. 73, 88 L.Ed.2d 60 (1985). The defense of inequitable conduct requires proof of (1) an act of misrepresentation before the Patent Office; (2) committed with the requisite intent; (3) involving material information; which (4) was known or should have been known to the patentee. N.V. Akzo, Aramide Maatschappij v. E.I. du Pont de Nemours & Co., 810 F.2d 1148, 1153 (Fed.Cir.1987); see also Allen Archery, Inc. v. Browning Mfg. Co., 819 F.2d 1087, 2 U.S.P.Q.2d 1490 (Fed.Cir.1987).
152. Inequitable conduct encompasses affirmative acts of commission, such as the submission of false information, as well as omission, such as the failure to disclose material information. J.P. Stevens, 747 F.2d at 1559.
153. There are several tests for determining the materiality of the information:
"Inequitable conduct" requires proof by clear and convincing evidence of a threshold degree of materiality of the nondisclosed or false information. It has been indicated that the threshold can be established by any of four tests: (1) objective "but for"; (2) subjective "but for"; (3) "but it may have been"; and (4) PTO Rule [37 C.F.R. §] 1.56(a), i.e., whether there is a substantial likelihood that a reasonable examiner would have considered the omitted reference or false information important in deciding whether to allow the application to issue as a patent. The PTO standard is the appropriate starting point because it is the broadest and because it most closely aligns with how one ought to conduct business with the PTO.... Under the *1442 standard, a reference that would have been merely cumulative is not material.
Id. at 1559-60 (citations omitted) (quoted in part in Argus Chemical Corp. v. Fibre Glass-Evercoat Co., 759 F.2d 10, 14 (Fed. Cir.), cert. denied, 474 U.S. 903, 106 S.Ct. 231, 88 L.Ed.2d 230 (1985)).
154. A threshold degree of intent also must be shown:
That intent need not be proven with direct evidence. It may be proven by showing acts the natural consequence of which are presumably intended by the actor. Proof of deliberate scheming is not needed; gross negligence is sufficient. Gross negligence is present when the actor, judged as a reasonable person in his position, should have known of the materiality of a withheld reference. On the other hand, simple negligence, oversight, or an erroneous judgment made in good faith, is insufficient.
J.P. Stevens, 747 F.2d at 1560 (citations omitted).
155. Once the thresholds of materiality and intent are met, the trier of fact must balance them in determining whether inequitable conduct has occurred:
[T]he less material the proffered or withheld information, the greater degree of intent that must be proven. In contrast, a lesser degree of intent must be proven when the information has a great degree of materiality. Indeed, gross negligence can be the intended level of intent when the misrepresentation has a high degree of materiality. Simple negligence, however, or an error in judgment is never sufficient for a holding of inequitable conduct.
N.V. Akzo, 810 F.2d at 1153.
156. If proven, inequitable conduct renders all claims of a patent unenforceable, not just those claims to which the inequitable conduct was directed. J.P. Stevens, 747 F.2d at 1561.
157. The withholding of material references from the Examiner by Hamar and his attorney constituted inequitable conduct and renders the '202 patent unenforceable.
158. There has been no showing of inequitable conduct by Hamar or his attorney with respect to the '618 patent.

N. False Marking

159. 35 U.S.C. § 292 provides in part that
(a) ... Whoever marks upon, or affixes to, or uses in advertising in connection with any unpatented article, the word "patent" or any other word or number importing that the same is patented, for the purpose of deceiving the public;
....
Shall be fined not more than $500 for every such offense.
(b) Any person may sue for the penalty, in which event one-half shall go to the person suing and the other to the use of the United States.
160. There can be no violation of the false marking statute absent proof that the false marking or mismarking was done to deceive the public. Arcadia Machine & Tool v. Strum, Ruger & Co., 786 F.2d 1124 (Fed.Cir.1986).
161. Although Hamar falsely marked its goods, there has been no showing that such marking was done with the purpose of deceiving the public.

O. Breach of Warranty

162. Hamar's limitations on its warranty were permissible under M.C.L.A. § 440.2719 (West 1967).
163. Intra failed to give Hamar notice of the defect in the equipment as Intra was required to do under M.C.L.A. § 440.2607 (West 1967).
164. Any possible breach of warranty claim that Intra may have had against Hamar is barred as a result of Intra's failure to notify Hamar concerning the alleged defect and its refusal to return the equipment to Hamar intact. Intra's actions violated the express terms of the warranty as well as the Uniform Commercial Code.

*1443 P. Attorney Fees

165. Neither party is entitled to an award of attorney fees. Although fees generally are recovered in cases involving inequitable conduct or willful infringement, the wrongful conduct by both parties prevents either from recovering attorney fees. See 35 U.S.C. § 285; Machinery Corp. of America v. Gullfiber AB, 774 F.2d 467 (Fed.Cir.1985); Reactive Metals & Allows Corp. v. ESM, Inc., 769 F.2d 1578 (Fed.Cir. 1985); Rohm & Haas Co. v. Crystal Chemical Co., 736 F.2d 688 (Fed.Cir.), cert. denied, 469 U.S. 851, 105 S.Ct. 172, 83 L.Ed.2d 107 (1984).[5]

Q. Illegal Intent to Monopolize

166. Intra finally argues that Hamar's attempt to enforce the patents in suit on the Quadra-Beam system constitutes unfair competition with the intent to monopolize the relevant market. "To establish an illegal attempt to monopolize, plaintiff must prove: (1) a specific intent to monopolize; and (2) a dangerous probability that the attempt would be successful in achieving a monopoly in the relevant market." Loctite Corp. v. Ultraseal Ltd., 781 F.2d 861, 875 (Fed.Cir.1985) (applying the law of the Seventh Circuit). The misconduct must rise to the level of common law fraud, i.e., that the defendant patentee knowingly and willfully misrepresented the facts to the Patent Office. Walker Process Equipment, Inc. v. Food Machinery & Chemical Corp., 382 U.S. 172, 86 S.Ct. 347, 15 L.Ed.2d 247 (1965); Argus Chemical Corp. v. Fibre Glass-Evercoat Co., 812 F.2d 1381 (Fed.Cir.1987); Kearney & Trecker Corp. v. Cincinnati Milacron, Inc., 562 F.2d 365 (6th Cir.1977).
167. Hamar and his attorney's conduct during the procurement of the '202 patent rose only to the level of gross negligence. There has been no showing of fraud.

ORDER
For the reasons stated, IT IS HEREBY ORDERED
1. That the '202 patent is invalid and unenforceable.
2. That Intra has not carried its burden of showing the invalidity of the '618 patent.
3. That judgment be entered in favor of Hamar and against Intra in the amount of $36,000.00 for Intra's willful infringement of the '618 patent.
4. That Intra be permanently enjoined from further infringement of the '618 patent.
5. That all other claims between the parties are dismissed.
So ordered.
NOTES
[1]  Hamar added a shim to the first few Model T-216 targets to compensate for the small mirrors that it received in an early shipment from a supplier. The shim is not needed if the mirror is the correct size as shown in Hamar's specifications.
[2]  At the September, 1986, Chicago NATBA Tool Show, Hamar exhibited laser alignment equipment which incorporated several features of the Intra Kingsbury alignment system, including side mounted emitter controls for adjusting the laser beam, replaceable mountings on the emitter and target, and faster electronics for displaying the results.
[3]  Hamar requested that the Patent Office stay the reexamination of the '202 patent pending the decision by this Court.
[4]  Hamar contends that the invention of the '202 patent is not obvious because there is "[n]o disclosure or suggestion [in the prior art] for mounting an alignment laser in a spindle for rotation to define an annulus on the target and to find the axis of rotation of the spindle." Defendant's Post Trial Proposed Findings of Fact and Conclusions of Law passim. In so arguing, Hamar in effect asks this Court to hold that since the '202 patent is not anticipated by prior art, Intra has not carried its heavy burden of showing obviousness. The Court declines that invitation and refuses to replace the standard for determining obviousness with the standard for determining anticipation.
[5]  Intra in its closing argument appeared to withdraw its request for attorney fees.