A court of the Eastern District of Texas denied a motion for partial summary judgment in an interpleader action involving competing claims to life insurance proceeds, holding that fact issues regarding the timing of a beneficiary change request precluded judgment as a matter of law, while concluding that an insured’s agent acting under a power of attorney lacked authority under the Texas Estates Code to designate himself as a beneficiary but could validly designate other beneficiaries if the request was timely.