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Try CasePortal for FreeJ. Tunheim grants summary judgment to the patent claimant in its suit alleging that the patent defendant's firewood processing attachment for a skid steer loader infringes on the claimant's patent. The accused product falls within the limitations of all of the claimant's asserted patent claims, and the claimant has therefore proved literal infringement. The patent is also not rendered obvious by prior art identified by the patent defendant, since the defendant has not shown that the combination of the elements discussed in the prior art was obvious. The claimant's claims are also not barred by estoppel or waiver, nor by prior litigation related to a pivotally mounted loading apparatus since this patent concerns a rigidly mounted apparatus. Finally, the defendant has not shown that this case is exceptional or has been litigated in an unreasonable manner.