flectra/addons/product_expiry/views/production_lot_views.xml

<?xml version="1.0" encoding='UTF-8'?>
<flectra>
    <record id="view_move_form_expiry" model="ir.ui.view">
        <field name="name">stock.production.lot.inherit.form</field>
        <field name="model">stock.production.lot</field>
        <field name="inherit_id" ref="stock.view_production_lot_form" />
        <field name="arch" type="xml">
        <xpath expr="//group[@name='main_group']" position="after">
            <group string="Dates">
                <group>
                    <field name="use_date" />
                    <field name="removal_date" />
                </group>
                <group>
                    <field name="life_date" />
                    <field name="alert_date" />
                </group>
            </group>
        </xpath>
        <xpath expr="//div[hasclass('oe_title')]" position="inside">
            <field name="product_expiry_alert" invisible="1"/>
            <span class="label label-danger" attrs="{'invisible': [('product_expiry_alert', '=', False)]}">Expiration Alert</span>
        </xpath>
        </field>
    </record>

    <record id="view_move_form_expiry_simple" model="ir.ui.view">
        <field name="name">stock.production.lot.inherit.form</field>
        <field name="model">stock.production.lot</field>
        <field name="inherit_id" ref="stock.view_production_lot_form_simple" />
        <field name="arch" type="xml">
        <xpath expr="//group[@name='main_group']" position="after">
            <group string="Dates">
                <group>
                    <field name="use_date" />
                    <field name="removal_date" />
                </group>
                <group>
                    <field name="life_date" />
                    <field name="alert_date" />
                </group>
            </group>
        </xpath>
        <xpath expr="//div[hasclass('oe_title')]" position="inside">
            <field name="product_expiry_alert" invisible="1"/>
            <span class="label label-danger" attrs="{'invisible': [('product_expiry_alert', '=', False)]}">Expiration Alert</span>
        </xpath>
        </field>
    </record>

    <record id="search_product_lot_filter_inherit_product_expiry" model="ir.ui.view">
        <field name="name">stock.production.lot.search.inherit</field>
        <field name="model">stock.production.lot</field>
        <field name="inherit_id" ref="stock.search_product_lot_filter"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='product_id']" position="after">
                <filter string="Expiration alerts" domain="[('alert_date', '&lt;=', time.strftime('%Y-%m-%d %H:%M:%S'))]"/>
            </xpath>
        </field>
     </record>

</flectra>